MetalLB Operator upgrade pending in RHOCP 4

Issue

• MetalLB Operator cannot update: CatalogSource not found.
• MetalLB Operator pending: Up to date.

• MetalLB Operator upgrade failing for error:

  message: 'error validating existing CRs against new CRD''s schema for "addresspools.metallb.io":
    error listing resources in GroupVersionResource schema.GroupVersionResource{Group:"metallb.io",
    Version:"v1alpha1", Resource:"addresspools"}: conversion webhook for metallb.io/v1beta1,
    Kind=AddressPool failed: no kind "AddressPool" is registered for version "metallb.io/v1alpha1"
    in scheme "/metallb/internal/k8s/k8s.go:59"'
  

• MetalLB Operator CSVs stuck in Replacing and Pending for too long:

  $ oc get csv 
  NAME                                   DISPLAY            VERSION               REPLACES                               PHASE
  metallb-operator.4.11.0-202302282354   MetalLB Operator   4.11.0-202302282354                                          Replacing
  metallb-operator.4.11.0-202305151728   MetalLB Operator   4.11.0-202305151728   metallb-operator.4.11.0-202302282354   Pending