docs: drop chevron example

[khiga8]

Closes https://github.com/github/accessibility-audits/issues/10076

Removed

This drops chevron example (aka dropdown example) per https://github.com/github/accessibility-audits/issues/10076#issuecomment-2590126689.

it is decorative. It is also a pattern we don't want to encourage.

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

this only impacts docs.

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)

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[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	104.22 KB (0%)
packages/react/dist/browser.umd.js	104.58 KB (0%)