CORENET-6462: Remove exceptions for network operator

The network operator should correctly report Available, Progressing,
and Degraded state on standard highly-available clusters. Remove the
Degraded=True pass-through exception outside upgrade windows and the
downstream OCPBUGS-38668 exception, similar to origin#30677 from the
storage team.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: weliang1

pkg/monitortests/clusterversionoperator/legacycvomonitortests/operators.go

@@ -327,12 +327,6 @@ func testUpgradeOperatorStateTransitions(events monitorapi.Intervals, clientConf
 				} else {
 					return ""
 				}
-			case "network":
-				if condition.Type == configv1.OperatorDegraded && condition.Status == configv1.ConditionTrue {
-					logrus.Infof("Operator %s is in Degraded=True state outside of upgrade window, but we will check for exceptions", operator)
-				} else {
-					return ""
-				}
 			case "console":
 				if condition.Type == configv1.OperatorDegraded && condition.Status == configv1.ConditionTrue {
 					return "https://issues.redhat.com/browse/OCPBUGS-38676"
@@ -451,10 +445,6 @@ func testUpgradeOperatorStateTransitions(events monitorapi.Intervals, clientConf
 			if condition.Type == configv1.OperatorDegraded && condition.Status == configv1.ConditionTrue && condition.Reason == "DNSDegraded" {
 				return "https://issues.redhat.com/browse/OCPBUGS-38666"
 			}
-		case "network":
-			if condition.Type == configv1.OperatorDegraded && condition.Status == configv1.ConditionTrue {
-				return "https://issues.redhat.com/browse/OCPBUGS-38668"
-			}
 		case "openshift-samples":
 			if condition.Type == configv1.OperatorDegraded && condition.Status == configv1.ConditionTrue && condition.Reason == "APIServerServiceUnavailableError" {
 				return "https://issues.redhat.com/browse/OCPBUGS-38679"