feat(menu): S2 menu fast follows

[5t3ph]

Description

This handles a few remaining items from the initial S2 migration:

• update to use the correct "LinkOut" icon (previously unavailable)
• add "Unavailable" icon
  • the functionality in WC will be to open an explanatory popover

Additionally, per design review, updates were made for tests and stories regarding valid feature combos:

• Not allowed:
  • external links with: thumbnails, drill-in, unavailable, or selection modes
  • thumbnails with: drill-in, external links
  • new "unavailable" with: selection modes, external links
• Updates:
  • added "With description" to complete feature testing for selection modes

Still pending for this component (non-blocking for this PR):

• possibly thumbnail token updates, which will split to be handled separately if so

Validation steps

Review the Menu stories and check:

• "LinkOut" icon is used for the "External link" option (@cdransf)
• "InfoCircle" icon is used for the "Unavailable" option (@cdransf)
• stories are complete for new/updated options (@cdransf)
• tests are complete for new/updated options (@cdransf)

Regression testing

Validate:

1. The documentation pages for at least two other components are still loading, including:

• The pages render correctly, are accessible, and are responsive.

Screenshots

To-do list

• I have read the contribution guidelines.
• I have updated relevant storybook stories and templates.
• I have tested these changes in Windows High Contrast mode.
• Design has reviewed and validated menu item combinations.
• ✨ This pull request is ready to merge. ✨

[changeset-bot]

🦋 Changeset detected

Latest commit: a5fcd4f

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@spectrum-css/menu	Minor
@spectrum-css/bundle	Patch
@spectrum-css/preview	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

File metrics

Summary

Total size: 1.44 MB^*

Package	Size	Minified	Gzipped
menu	48.04 KB	45.78 KB	5.10 KB

menu

Filename	Head	Minified	Gzipped	Compared to base
index.css	48.04 KB	45.78 KB	5.10 KB	🟢 ⬇ 0.24 KB
metadata.json	23.93 KB	-	-	🔴 ⬆ 0.19 KB

* Size is the sum of all main files for packages in the library.
* An ASCII character in UTF-8 is 8 bits or 1 byte.

[github-actions]

📚 Branch preview

PR #4058 has been deployed to Azure Blob Storage: https://spectrumcss.z13.web.core.windows.net/pr-4058/index.html.

[cdransf]

This looks great! Just had one non-blocking question. ✨

[rise-erpelding]

Leaving some comments, this looks really nice overall and I'm not sure there are necessarily any changes that need to be requested, but I did have a lot of questions/callouts that may or may not need addressing and wasn't sure I was ready to approve because of them.

[5t3ph]

But would drill-ins exist in a selection mode? 🤔

Checking on this with design