ocs-operator Subscription failure in Red Hat Openshift Data Foundation 4.x: Constraints not satisfiable, Package and Channel Mismatch

Issue

• ocs-operator and rook-ceph-operator pods are missing
• ocs-operator deployment is missing

• ocs-operator subscription shows below error message:

  constraints not satisfiable: no operators found with name ocs-operator.v4.x.y in channel stable-4.z of package ocs-operator in the catalog referenced by subscription ocs-operator-stable-4.x, subscription ocs-operator-stable-4.x exists
  

• Due to the missing ocs-operator, none of the csi-rbdplugin and csi-cephfsplugin pods are running on any of the Openshift node

• CSI client fails to find driver openshift-storage.rbd.csi.ceph.com or openshift-storage.cephfs.csi.ceph.com in the list of registered CSI drivers.
• Every pod requiring volume(either RBD or Cephfs) mounting from ODF storage encounters similar error message and fails to start
  MountVolume.SetUp failed for volume "pvc-xxxxx" : kubernetes.io/csi: mounter.SetUpAt failed to get CSI client: driver name openshift-storage.rbd.csi.ceph.com not found in the list of registered CSI drivers
• ODF upgrade fails to upgrade to the next version
• Resolution steps mentioned in the solution article Unable to mount OCS backed PV to pods in an OCS 4.X cluster doesn't help to resolve the issue