Skip CI for changeset-release PRs

[flyon]

Summary

• skip the CI workflow build/test job when the PR head is changeset-release/main and the base is main
• keep the existing CI behavior for all other PRs into dev and main

Why

Release PRs from changeset-release/main into main only version and changelog the package. Skipping the normal CI build/test job avoids redundant runs while preserving CI coverage for regular feature and fix PRs.

Validation

• workflow-only change; logic reviewed in .github/workflows/ci.yml

[github-actions]

⚠️ No changeset found. If this PR should trigger a release, run npx changeset and commit the generated file.

If this change doesn't need a release (docs, CI config, etc.), you can ignore this message.