The image-registry cluster operator is in progressing state in disconnected environment in RHOCP 4

Issue

• The Cluster Operator image-registry is in progressing state:

$ oc get co image-registry
NAME            VERSION  AVAILABLE  PROGRESSING  DEGRADED  SINCE
image-registry  4.10.55  True       True         False     2d

• image-registry pod failed to mount with the following error messages:

2m59s      Warning  FailedMount             pod/image-registry-xxxxxxxx   MountVolume.MountDevice failed for volume "csiunity-b107c37307" : rpc error: code = InvalidArgument desc =  runid=2004 Mount failed for NFS export paths: [192.x.y.z:/csishare-csiunity-b107c37307]. Error: mount failed: exit status 32