SegmentedControl: Add context to ariaLabel prop

[TylerJDev]

Closes https://github.com/github/primer/issues/3497

Changelog

Changed

• Updates accessible name of SegmentedControl menu button to contain the visual text, and provided aria-label.

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: 137634c

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	Patch

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[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	96.41 KB (+0.16% 🔺)
packages/react/dist/browser.umd.js	96.65 KB (+0.03% 🔺)

[primer-integration]

👋 Hi from github/github! Your integration PR is ready: https://github.com/github/github/pull/340353

[joshblack]

Looks great! Wanted to ask if it would be possible to include a test too to make sure we don't miss this in the future? 😅