ActionMenu: Ensure custom overlay is responsive

[TylerJDev]

Context: https://github.com/github/accessibility-audits/issues/10002

Ensures that the custom Overlay in ActionMenu's example is responsive, via the preventOverflow prop.

Changelog

Changed

• Adds preventOverflow prop to ActionMenu example so that the custom Overlay is responsive
• Adds newline to docs for Overlay

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]

⚠️ No Changeset found

Latest commit: efb73cf

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[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	105.57 KB (0%)
packages/react/dist/browser.umd.js	106.04 KB (0%)