Description of problem:

When the ManagedCluster resource lacks the `vendor: OpenShift` label, the managed cluster is identified as non OCP and a specific payload is deployed. But in under certain states, this label is missing and we should also verify the openshift id cluster claim.
Cf: https://redhat-internal.slack.com/archives/CUU609ZQC/p1767930317750089?thread_ts=1765380718.269239&cid=CUU609ZQC

Version-Release number of selected component (if applicable):

2.15