Addressed scrolling accessibility issue on homepage

[tkakar]

Summary

Fixes the accessibility issue Ensure elements that have scrollable content are accessible by keyboard on the Home Page, particularly on the chart's legend. This was not included in the report, but I found the issue during other fixes.

Design Documentation/Original Tickets

CAT-1083

Testing

Manually tested using the axe DevTool

Screenshots/Video

Include screenshots or video demonstrating any significant visual or behavioral changes.

Checklist

• Code follows the project's coding standards
  • Lint checks pass locally
  • New CHANGELOG-your-feature-name-here.md is present in the root directory, describing the change(s) in full sentences.
• Unit tests covering the new feature have been added
• All existing tests pass
• Any relevant documentation in JIRA/Confluence has been updated to reflect the new feature
• Any new functionalities have appropriate analytics functionalities added

Additional Notes

Please specify any additional information or context relevant to this PR.