perf: enable React Compiler for shared hooks

[joshblack]

Closes #

Follow up to #8143.

This PR enables React Compiler support for the shared hook internals in @primer/react. These hooks were still on the migration list because they needed small refactors to avoid compiler skips and keep callback/state behavior stable under compilation.

Changelog

New

Changed

• Update shared hook internals so they pass the React Compiler migration check.
• Add a patch changeset for enabling React Compiler support for shared hook internals.

Removed

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 should be a patch since it improves internal rendering behavior for existing hooks without changing the public API.

Testing & Reviewing

• npm run lint:react-compiler -w @primer/react

Would love a close look at the hook behavior changes, especially around callback stability and cleanup behavior.

[changeset-bot]

🦋 Changeset detected

Latest commit: f8b3d45

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]

⚠️ Action required

👋 Hi, this pull request contains changes to the source code that github/github-ui depends on. If you are GitHub staff, test these changes with github/github-ui using the integration workflow. If this doesn't work, you can also use the original workflow here. Check the integration testing docs for step-by-step instructions. Or, apply the integration-tests: skipped manually label to skip these checks.

To publish a canary release for integration testing, apply the Canary Release label to this PR.

[primer]

🤖 Lint issues have been automatically fixed and committed to this PR.