test(radio-button): add darkmode screenshot test and refactor folder structure

[max-umain]

Describe pull-request

Adds darkmode screenshot test for radio-button component.

Issue Linking:

• Jira: CDEP-3659

How to test

1. Run npm run test
2. Visually inspect the files generated by the tests

Checklist before submission

• I have added unit tests for my changes (if applicable)
• All existing tests pass
• I have updated the documentation (if applicable)
• Not breaking production behavior
• Behavior available in storybook with documented descriptions (if applicable)
• npm run build-all without errors

Suggested test steps

• Browser testing (Chrome, Safari, Firefox)
• Keyboard operability
• Interactive elements have labels.
• Storybook controls
• Design/controls/props is aligned with other components
• Dark/light mode and variants
• Input fields – values should be displayed properly
• Events

Screenshots

Not applicable

Additional context

None

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Playwright test results

 1 failed
 418 passed
 1 skipped

Details

 420 tests across 146 suites
 58.4 seconds
 e05a5d4

Failed tests

src/components/popover-menu/test/icons-fluid/popover-menu.e2e.ts › tds-popover-menu-icons-fluid › icons are existing for menu items

Skipped tests

src/components/table/table/test/expandable-row-autocollapse/expandable-row-autocollapse.e2e.ts › tds-table-expandable-row-autoCollapse › NEEDS FIXING: expanding one row collapses the others when autoCollapse is true

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