Merge Checks are not working properly (BBS-68567)

"Check the last commit for "x" successful build and no failed builds"

This merge check should prevent the merge of a pull request when there still some builds running because it means that the last build(s) status may not be a "success".

How to Replicate

1. Run multiple builds on the same commit
2. Open a pull request after the first one run with success and the second and/or third still running.
3. Press "merge" to merge the pull request (you will not be prompted to wait for the build(s) to run).