change: [M3-9198] - Accessibility Issues with LKE Kubeconfig Buttons

[bill-akamai]

Description 📝

This PR replaces <Box> elements with <StyledLinkButton> for better accessibility and adds aria-labels in the KubeConfigDisplay.

Changes 🔄

• Replaced <Box> elements with <StyledLinkButton> components to improve accessibility.
• Added aria-labels to buttons for better screen reader support.
• Ensured buttons are focusable and can be triggered via keyboard navigation.

Preview 📷

Before	After
M3-9198.Before.mp4	M3-9198.After.mov

How to test 🧪

• In the Kubernetes dashboard, click into the body of the page.
• Hit the tab key on your keyboard and tab through the page.
• Confirm that the Kubeconfig controls are being recognized as a tab-able item.
• Confirm the presence of each item's aria-label in Dev Tools.

Author Checklists

As an Author, to speed up the review process, I considered 🤔

👀 Doing a self review
❔ Our contribution guidelines
🤏 Splitting feature into small PRs
➕ Adding a changeset
🧪 Providing/improving test coverage
🔐 Removing all sensitive information from the code and PR description
🚩 Using a feature flag to protect the release
👣 Providing comprehensive reproduction steps
📑 Providing or updating our documentation
🕛 Scheduling a pair reviewing session
📱 Providing mobile support
♿ Providing accessibility support

• I have read and considered all applicable items listed above.

As an Author, before moving this PR from Draft to Open, I confirmed ✅

• All unit tests are passing
• TypeScript compilation succeeded without errors
• Code passes all linting rules

[github-actions]

Coverage Report: ✅
Base Coverage: 80.13%
Current Coverage: 80.13%

[abailly-akamai]

Thanks for the fix - confirmed markup is properly adjusted to improve accessibility on the CTAs ✅

[dwiley-akamai]

Ability to tab to each Kubeconfig button ✅
aria-label present for each Kubeconfig button ✅