Authentication operator degraded after RHOCP 4.x installation due to OAuthRouteCheckEndpointAccessibleControllerDegraded

Issue

• Authentication and console operators are in degraded state:

  NAME                                      VERSION  AVAILABLE  PROGRESSING  DEGRADED  SINCE
  authentication                                     False      True         True      2d
  console                                   4.6.51   False      True         True      1m51s
  

• Below event is streaming in openshift-authentication-operator project repetitively:

  1m58s      Normal   OperatorStatusChanged       deployment/authentication-operator              Status for clusteroperator/authentication changed: Degraded message changed from "OAuthRouteCheckEndpointAccessibleControllerDegraded: Get \"https://oauth-openshift.apps.example.com/healthz\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)\nOAuthServerDeploymentDegraded: Unable to get \"openshift-browser-client\" bootstrapped OAuth client: the server is currently unable to handle the request (get oauthclients.oauth.openshift.io openshift-browser-client)" to "OAuthRouteCheckEndpointAccessibleControllerDegraded: Get \"https://oauth-openshift.apps.example.com/healthz\": dial tcp 10.x.x.x:443: i/o timeout (Client.Timeout exceeded while awaiting headers)\nOAuthServerDeploymentDegraded: Unable to get \"openshift-browser-client\" bootstrapped OAuth client: the server is currently unable to handle the request (get oauthclients.oauth.openshift.io openshift-browser-client)"
  

• Authentication-operator pod is streaming below logs:

  2022-07-14T14:38:05.077097567Z E0714 14:38:05.077039       1 base_controller.go:250] "OAuthRouteCheckEndpointAccessibleController" controller failed to sync "key", err: Get "https://oauth-openshift.apps.example.com/healthz": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
  2022-07-14T14:38:05.820489757Z I0714 14:38:05.820430       1 request.go:645] Throttling request took 1.193994482s, request: GET:https://10.0.0.1:443/api/v1/namespaces/openshift-oauth-apiserver/services/api
  2022-07-14T14:38:10.077629588Z E0714 14:38:10.077576       1 base_controller.go:250] "OAuthRouteCheckEndpointAccessibleController" controller failed to sync "key", err: Get "https://oauth-openshift.apps.example.com/healthz": context deadline exceeded (Client.Timeout exceeded while awaiting headers)