feat(react-tokens): add dark theme token values

[logonoff]

Closes #11803

Enhanced the @patternfly/react-tokens package to include dark theme values in semantic token definitions, making it easier for developers to access both light and dark theme values programmatically.

Changes:

• Added getDarkThemeDeclarations() to extract dark theme CSS rules
• Added getDarkLocalVarsMap() to build dark theme variable mappings
• Updated token generation to include darkValue and darkValues properties
• Enhanced variable resolution to support dark theme context
• Updated legacy token support to include dark values

Result:

• 1,998 tokens now include dark theme values
• Tokens with dark overrides expose darkValue property
• Backward compatible with existing code
• Enables programmatic theme switching and consistency

Implements: #11803

🤖 Generated with Claude Code

[rebeccaalpert]

Seeing some build errors here:

Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(164,3): error TS2322: Type '{ style: { data: { fill: "var(--pf-v6-chart-area--data--Fill, --pf-t--chart--global--fill--color--900)"; fillOpacity: 0.3; strokeWidth: "--pf-t--chart--global--stroke--width--sm"; }; labels: { ...; }; }; padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--global--layout--height"; width: "--pf-...' is not assignable to type '{ style?: { data?: VictoryStyleObject; labels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; }; } & VictoryCommonThemeProps & VictoryDatableProps'.
  Type '{ style: { data: { fill: "var(--pf-v6-chart-area--data--Fill, --pf-t--chart--global--fill--color--900)"; fillOpacity: 0.3; strokeWidth: "--pf-t--chart--global--stroke--width--sm"; }; labels: { ...; }; }; padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--global--layout--height"; width: "--pf-...' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(177,3): error TS2322: Type '{ style: { axis: { fill: "var(--pf-v6-chart-axis--axis--Fill, transparent)"; strokeWidth: "--pf-t--chart--global--stroke--width--xs"; stroke: "var(--pf-v6-chart-axis--axis--stroke--Color, --pf-t--chart--global--fill--color--300)"; strokeLinecap: "--pf-t--chart--global--stroke-line-cap"; strokeLinejoin: "--pf-t--char...' is not assignable to type '{ style?: { axis?: VictoryStyleObject; axisLabel?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; grid?: VictoryStyleObject; ticks?: VictoryTickStyleObject; tickLabels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; }; offsetX?: number; offsetY?: number; } & VictoryCommonThemeProps'.
  Type '{ style: { axis: { fill: "var(--pf-v6-chart-axis--axis--Fill, transparent)"; strokeWidth: "--pf-t--chart--global--stroke--width--xs"; stroke: "var(--pf-v6-chart-axis--axis--stroke--Color, --pf-t--chart--global--fill--color--300)"; strokeLinecap: "--pf-t--chart--global--stroke-line-cap"; strokeLinejoin: "--pf-t--char...' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(226,3): error TS2322: Type '{ style: { max: { padding: 8; stroke: "var(--pf-v6-chart-boxplot--max--stroke--Color, --pf-t--chart--global--fill--color--900)"; strokeWidth: "--pf-t--chart--global--stroke--width--xs"; }; ... 8 more ...; q3Labels: { ...; }; }; boxWidth: 20; padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--...' is not assignable to type '{ style?: { max?: VictoryStyleObject; maxLabels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; median?: VictoryStyleObject; ... 6 more ...; q3Labels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; }; boxWidth?: number; } & VictoryCommonThemeProps'.
  Type '{ style: { max: { padding: 8; stroke: "var(--pf-v6-chart-boxplot--max--stroke--Color, --pf-t--chart--global--fill--color--900)"; strokeWidth: "--pf-t--chart--global--stroke--width--xs"; }; ... 8 more ...; q3Labels: { ...; }; }; boxWidth: 20; padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--...' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(260,3): error TS2322: Type '{ candleColors: { positive: "var(--pf-v6-chart-candelstick--candle--positive--Color, --pf-t--chart--global--fill--color--white)"; negative: "var(--pf-v6-chart-candelstick--candle--negative--Color, --pf-t--chart--global--fill--color--900)"; }; style: { ...; }; padding: "--pf-t--chart--global--layout--padding"; height...' is not assignable to type '{ style?: { data?: VictoryStyleObject; labels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; }; candleColors?: { ...; }; } & VictoryCommonThemeProps'.
  Type '{ candleColors: { positive: "var(--pf-v6-chart-candelstick--candle--positive--Color, --pf-t--chart--global--fill--color--white)"; negative: "var(--pf-v6-chart-candelstick--candle--negative--Color, --pf-t--chart--global--fill--color--900)"; }; style: { ...; }; padding: "--pf-t--chart--global--layout--padding"; height...' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(274,3): error TS2322: Type '{ padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--global--layout--height"; width: "--pf-t--chart--global--layout--width"; }' is not assignable to type 'VictoryCommonThemeProps'.
  Types of property 'height' are incompatible.
    Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(279,5): error TS2322: Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(290,3): error TS2322: Type '{ padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--global--layout--height"; width: "--pf-t--chart--global--layout--width"; }' is not assignable to type '{ style?: { data?: VictoryStyleObject; labels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; }; } & VictoryCommonThemeProps'.
  Type '{ padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--global--layout--height"; width: "--pf-t--chart--global--layout--width"; }' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(309,3): error TS2322: Type '{ style: { data: { fill: "var(--pf-v6-chart-line--data--Fill, transparent)"; opacity: 1; stroke: "var(--pf-v6-chart-line--data--stroke--Color, --pf-t--chart--global--fill--color--900)"; strokeWidth: "--pf-t--chart--global--stroke--width--sm"; }; labels: { ...; }; }; padding: "--pf-t--chart--global--layout--padding";...' is not assignable to type '{ style?: { data?: VictoryStyleObject; labels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; }; } & VictoryCommonThemeProps & VictoryDatableProps'.
  Type '{ style: { data: { fill: "var(--pf-v6-chart-line--data--Fill, transparent)"; opacity: 1; stroke: "var(--pf-v6-chart-line--data--stroke--Color, --pf-t--chart--global--fill--color--900)"; strokeWidth: "--pf-t--chart--global--stroke--width--sm"; }; labels: { ...; }; }; padding: "--pf-t--chart--global--layout--padding";...' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(337,3): error TS2322: Type '{ style: { data: { fill: "var(--pf-v6-chart-scatter--data--Fill, --pf-t--chart--global--fill--color--900)"; opacity: 1; stroke: "var(--pf-v6-chart-scatter--data--stroke--Color, transparent)"; strokeWidth: 0; }; labels: { ...; }; }; padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--global--la...' is not assignable to type '{ style?: { data?: VictoryStyleObject; labels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; }; } & VictoryCommonThemeProps & VictoryDatableProps'.
  Type '{ style: { data: { fill: "var(--pf-v6-chart-scatter--data--Fill, --pf-t--chart--global--fill--color--900)"; opacity: 1; stroke: "var(--pf-v6-chart-scatter--data--stroke--Color, transparent)"; strokeWidth: 0; }; labels: { ...; }; }; padding: "--pf-t--chart--global--layout--padding"; height: "--pf-t--chart--global--la...' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartTheme/themes/base-theme.ts(374,3): error TS2322: Type '{ style: { data: { fill: "var(--pf-v6-chart-voronoi--data--Fill, transparent)"; stroke: "var(--pf-v6-chart-voronoi--data--stroke--Color, transparent)"; strokeWidth: 0; }; labels: { fill: "var(--pf-v6-chart-voronoi--labels--Fill, --pf-t--chart--global--fill--color--200)"; ... 6 more ...; stroke: "var(--pf-v6-chart-gl...' is not assignable to type '{ style?: { data?: VictoryStyleObject; labels?: VictoryLabelStyleObject | VictoryLabelStyleObject[]; flyout?: VictoryStyleObject; }; } & VictoryCommonThemeProps & VictoryDatableProps'.
  Type '{ style: { data: { fill: "var(--pf-v6-chart-voronoi--data--Fill, transparent)"; stroke: "var(--pf-v6-chart-voronoi--data--stroke--Color, transparent)"; strokeWidth: 0; }; labels: { fill: "var(--pf-v6-chart-voronoi--labels--Fill, --pf-t--chart--global--fill--color--200)"; ... 6 more ...; stroke: "var(--pf-v6-chart-gl...' is not assignable to type 'VictoryCommonThemeProps'.
    Types of property 'height' are incompatible.
      Type 'string' is not assignable to type 'number'.
Error: packages/react-charts/src/victory/components/ChartUtils/chart-label.ts(105,34): error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number', 'bigint' or an enum type.
Error: packages/react-charts/src/victory/components/ChartUtils/chart-legend.ts(149,8): error TS2365: Operator '>' cannot be applied to types 'string | number' and 'number'.
Error: packages/react-charts/src/victory/components/ChartBullet/ChartBulletTitle.tsx(207,41): error TS2362: The left-hand side of an arithmetic operation must be of type 'any', 'number', 'bigint' or an enum type.