docs: Migrating accessibility guidelines for Expandable & Menu

[williamjstanton]

Summary

As part of making accessibility a "first class citizen" in Canvas docs, we will be pulling any technical information for developers off of the design site, and into the Canvas repository.

Expandable and Menu are the next set of components.

Release Category

Documentation

Checklist

• [ ] MDX documentation adheres to Canvas Kit's Documentation Guidelines
• [ ] Label ready for review has been added to PR

For the Reviewer

• [ ] PR title is short and descriptive
• [ ] PR summary describes the change (Fixes/Resolves linked correctly)
• [ ] PR Release Notes describes additional information useful to call out in a release message or removed if not applicable
• [ ] Breaking Changes provides useful information to upgrade to this code or removed if not applicable

Where Should the Reviewer Start?

modules/react/expandable/stories/Expandable.mdx modules/react/menu/stories/Menu.mdx

I also updated the examples using the new Avatar component and the isDecorative prop.

Areas for Feedback? (optional)

• [ ] Code
• [X] Documentation
• [ ] Testing
• [ ] Codemods

Testing Manually

Screenshots or GIFs (if applicable)

Thank You Gif (optional)

[cypress[bot]]

Workday/canvas-kit    Run #9967

Run Properties:   Passed #9967  •  d3f30abd66 ℹ️: Merge a0ec74114d66cf2fd7a1db61865e1eaec25d1e7a into 6589a979c0a56ef57b3fefb0057e...

Project	Workday/canvas-kit
Branch Review	william-docs-expandable-and-menu
Run status	Passed #9967
Run duration	02m 18s
Commit	d3f30abd66 ℹ️: Merge a0ec74114d66cf2fd7a1db61865e1eaec25d1e7a into 6589a979c0a56ef57b3fefb0057e...
Committer	William Stanton
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	0
Pending	86
Skipped	0
Passing	862
View all changes introduced in this branch ↗︎

UI Coverage  19.4%
Untested elements	1535
Tested elements	367

Accessibility  99.33%
Failed rules	6 critical   5 serious   0 moderate   2 minor
Failed elements	77