Packageserver csv stuck in installing state due to "waiting for x outdated replica(s) to be terminated" during RHOCP 4.x upgrade

Issue

• Packageserver csv is stuck in installing state:

$ oc get csv -n openshift-operator-lifecycle-manager
NAME                             DISPLAY                            VERSION   REPLACES                          PHASE
packageserver                    Package Server                     0.17.0                                      Installing

$ oc describe csv packageserver -n openshift-operator-lifecycle-manager
----OUTPUT OMITTED----
  Last Transition Time:    2022-01-24T12:12:38Z
  Last Update Time:        2022-01-24T12:12:56Z
  Message:                 installing: waiting for deployment packageserver to become ready: deployment "packageserver" waiting for 1 outdated replica(s) to be terminated
  Phase:                   Installing
  Reason:                  InstallWaiting
----OUTPUT OMITTED----

• Cluster operator operator-lifecycle-manager-packageserver is stuck in progressing state:

$ oc get co operator-lifecycle-manager-packageserver
NAME                                      VERSION  AVAILABLE  PROGRESSING  DEGRADED  SINCE
operator-lifecycle-manager-packageserver  4.8.23   True       True         False     19h