ci: check team-label only on pr and issue open

[Boshen]

Summary

The team-label action is currently running on every action type, this reduces it by only running on opend. See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#issues

Related issue (if exists)

Types of changes

• Docs change / Dependency upgrade
• Bug fix
• New feature / Improvement
• Refactoring
• Breaking change

Checklist

• I have added changeset via pnpm run changeset.
• I have added tests to cover my changes.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 928796c

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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