feat(upgrade): Add support for @clerk/react

[dstaley]

Description

This PR adds support for a codemod that will transform imports:

• From @clerk/clerk-react to @clerk/react
• From @clerk/clerk-expo to @clerk/expo
• Of useSignIn() and useSignUp() to the /legacy subpath

It will perform these changes in the following SDKs:

• @clerk/clerk-react
• @clerk/clerk-expo
• @clerk/nextjs
• @clerk/react-router
• @clerk/tanstack-start-react

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[changeset-bot]

🦋 Changeset detected

Latest commit: 179bd6d

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

This PR includes changesets to release 1 package

Name	Type
@clerk/upgrade	Minor

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1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
clerk-js-sandbox	Skipped			Nov 13, 2025 5:40pm

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch ds.feat/clerk-upgrade-react-legacy

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