fix: add keyboard navigation for wrapped slides

[Chakshu-Bamotra]

Summary

Added keyboard navigation support to the Year in Code slides, improving accessibility for users who rely on keyboard interactions.

Closes #1650

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Type of Change

• Bug fix
• New feature
• Documentation update
• Refactor / code cleanup

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Changes Made

• Added keyboard navigation using Left Arrow and Right Arrow keys.
• Added Home key support to jump to the first slide.
• Added End key support to jump to the last slide.
• Improved accessibility for keyboard-only users.
• Added appropriate focus and accessibility attributes to the slide container.

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How to Test

1. Open the Year in Code page.

2. Navigate to the slide section.

3. Press the following keys:

   • Left Arrow → Previous slide
   • Right Arrow → Next slide
   • Home → First slide
   • End → Last slide

4. Verify slides update correctly.

5. Confirm existing Previous and Next buttons continue to function normally.

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Screenshots (if UI change)

N/A

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Checklist

• Linked issue in summary
• Self-reviewed the diff
• Added/updated tests if applicable

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Accessibility Checklist

• Keyboard navigation tested
• Focusable slide region added
• No accessibility regressions introduced
• Existing functionality preserved

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Additional Notes

This change improves accessibility compliance and provides a better experience for users who navigate the application without a mouse.

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[github-actions]

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