Revert "Github Actions pull_request synchronize runs on PR open anyway" (#8720)
Revert "Github Actions pull_request synchronize runs on PR open anyway" (#8720)

* Revert "Github Actions pull_request synchronize runs on PR open anyway (#8718)"

This reverts commit eaace4b4d1fe1758f75acc197986ce7eaf687f20.

* Update pull_request.yaml
matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk