Ingress Operator is degraded with the reason "IngressUnavailable"

Issue

• The Ingress Operator was failing with the below message:

  "lastTransitionTime": "2024-08-19T08:10:08Z",
  "message": "The \"default\" ingress controller reports Available=False: IngressControllerUnavailable: One or more status conditions indicate unavailable: DeploymentAvailable=False (DeploymentUnavailable: The deployment has Available status condition set to False (reason: MinimumReplicasUnavailable) with message: Deployment does not have minimum availability.)",
  "reason": "IngressUnavailable",
  "status": "False",
  "type": "Available"
  

• Ingress router PODs are not running.

• The Ingress Cluster Operator is regarded during the OpenShift upgrade.

• The router-default PODs are in the CrashLoopBackOff state due to the below error:

  2024-08-19T08:05:42.752027900Z E0819 08:05:42.751993       1 metrics.go:132]metrics "msg"="listening on the metrics port failed" "error"="listen tcp 0.0.0.0:1936: bind: address already in use"