AnchoredOverlay: Add responsive variant prop

[siddharthkp]

Note

• Parallel PR in gh/gh: https://github.com/github/github/pull/366815, can be merged in any order as long as gh/gh PR is merged before we upgrade primer/react

---

• Prerequisite for SelectPanel: Make panel full screen on narrow screens with Save and optional Cancel button #5761
• Adds optional variant prop to AnchoredOverlay. It follows the same API style as other responsive variant props.
• No user changes expected
• Bonus: Add vrt for select panel with narrow screen

Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; if selected, include a brief description as to why

Testing & Reviewing

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Storybook)
• Changes are SSR compatible
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge
• (GitHub staff only) Integration tests pass at github/github (Learn more about how to run integration tests)

[changeset-bot]

🦋 Changeset detected

Latest commit: 7113084

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

This PR includes changesets to release 1 package

Name	Type
@primer/react	Minor

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[github-actions]

👋 Hi, this pull request contains changes to the source code that github/github depends on. If you are GitHub staff, we recommend testing these changes with github/github using the integration workflow. Thanks!

[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	106.13 KB (+0.08% 🔺)
packages/react/dist/browser.umd.js	106.42 KB (+0.09% 🔺)

[github-actions]

👋 Hi, there are new commits since the last successful integration test. We recommend running the integration workflow once more, unless you are sure the new changes do not affect github/github. Thanks!

[langermank]

Suggested change

	variant?: ResponsiveValue<'anchored', 'anchored' | 'full-screen'>
	variant?: ResponsiveValue<'anchored', 'anchored' | 'fullscreen'>

Small suggestion.. for Dialog, we use fullscreen and I think it would be nice to align here for simplicity 😄

[siddharthkp]

Good note! Done

[github-actions]

👋 Hi, there are new commits since the last successful integration test. We recommend running the integration workflow once more, unless you are sure the new changes do not affect github/github. Thanks!

[github-actions]

👋 Hi, there are new commits since the last successful integration test. We recommend running the integration workflow once more, unless you are sure the new changes do not affect github/github. Thanks!

[siddharthkp]

@langermank Ready for review again