feat(dev): set Node.js version in devEngines

[o-az]

🎯 Changes

This PR sets the desired Node.js version in package.json#devEngines which will automatically download the proper version if it's not present in the machine.

Currently if someone is using Node.js v25 and they run the repo tests, the tests will fail -- and to fix that they have to manually install / set the proper Node.js version. With this change, pnpm automatically handles the correct Node.js version and installs it at the repo scope (so no global Node.js installations are affected).

✅ Checklist

• I have followed the steps in the Contributing guide.
• I have tested this code locally with pnpm 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: a270b7b

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.

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