Rerunning a failed run from github checkrun should only restart failed one and not all

[sm43]

currently when we rerun a failed run from github UI, it restarts all of them which is not good waste of resources.

see https://github.com/openshift-pipelines/pipelines-as-code/issues/1368#issuecomment-1707950690

we should only restart the failed one.. how? probably the event has a checkrun name, and we can figure out which pipelinerun it is associated with

/kind bug