To support Merge-Queue, we need a scheduler triggered by label addition which is not triggered when PRs are updated. Additionally, our other EWS queues should not be triggered by label addition.
<rdar://problem/89983452>
Pull request: https://github.com/WebKit/WebKit/pull/194
Landed https://commits.webkit.org/248349@main (r291193)!
Re-opening for pull request https://github.com/WebKit/WebKit/pull/267
Committed r292607 (249439@main): <https://commits.webkit.org/249439@main> Reviewed commits have been landed. Closing PR #267 and removing active labels.