#270: Table of Contents Dropdown Implementation + Dropdown styling cleanup

[SaqAsh]

Summary

Implemented TableOfContentDropdown to wrap the existing Dropdown, open the matching accordion, and update the URL hash for automatic scrolling to the selected schema. Fixed existing styling issues with Dropdown

Issues

• 2A. Table of Contents Dropdown #270

Description of Changes

UI

• Added a new component TableOfContentsDropdown which lists all schemas and handles selection.
  • Wraps the existing Dropdown, maps schemas to menu items, and on selection calls onAccordionToggle and sets window.location.hash so the matching accordion opens and the page scrolls to that schema’s table.
  • Included the List icon from theme/icons, following existing conventions, and passed it as the leftIcon prop.

Readiness Checklist

• Self Review
  • I have performed a self review of code
  • I have run the application locally and manually tested the feature
  • I have checked all updates to correct typos and misspellings
• Formatting
  • Code follows the project style guide
  • Autmated code formatters (ie. Prettier) have been run
• Local Testing
  • Successfully built all packages locally
  • Successfully ran all test suites, all unit and integration tests pass
• Updated Tests
  • Unit and integration tests have been added that describe the bug that was fixed or the features that were added
• Documentation
  • All new environment variables added to .env.schema file and documented in the README
  • All changes to server HTTP endpoints have open-api documentation
  • All new functions exported from their module have TSDoc comment documentation