ci: fix v4 branch

[lachlancollins]

🎯 Changes

• Migrate github workflows to use latest Nx and changesets
• Update Nx to v22
• Add changesets config

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested this code locally with pnpm run test:pr.

🚀 Release Impact

• This change affects published code, and I have generated a changeset.
• This change is docs/CI/dev-only (no release).

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3cbdef4

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[nx-cloud]

View your CI Pipeline Execution ↗ for commit 3cbdef4

Command	Status	Duration	Result
nx affected --targets=test:lib,test:types,test:...	✅ Succeeded	2m 39s	View ↗
nx affected --targets=test:lib --base=9047b8cf0...	✅ Succeeded	<1s	View ↗

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☁️ Nx Cloud last updated this comment at 2026-01-16 22:30:41 UTC

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Sandbox	Source
@tanstack/query-example-react-basic-typescript	Configuration
@tanstack/query-example-solid-basic-typescript	Configuration
@tanstack/query-example-svelte-basic	Configuration
@tanstack/query-example-vue-basic	Configuration