featureset signal workaround

Signed-off-by: Qi Wang <qiwan@redhat.com>

Author: QiWang19

pkg/operator/status.go

@@ -283,12 +283,11 @@ func (optr *Operator) syncUpgradeableStatus(co *configv1.ClusterOperator) error
 
 	// Check for ClusterImagePolicy named "openshift" which conflicts with the cluster default ClusterImagePolicy object
 	// Only check for Default featureSet clusters allowing 4.20 ci techpreview builds upgrades
-	fg, err := optr.configClient.ConfigV1().FeatureGates().Get(context.TODO(), "cluster", metav1.GetOptions{})
-	if err != nil && !apierrors.IsNotFound(err) {
-		return err
-	}
-	if fg.Spec.FeatureSet == configv1.Default {
-		if _, err = optr.configClient.ConfigV1().ClusterImagePolicies().Get(context.TODO(), "openshift", metav1.GetOptions{}); err == nil {
+	// Use SigstoreImageVerificationPKI as an featureset indicator: if it's disabled, the cluster is on Default feature set
+	// (SigstoreImageVerificationPKI is only enabled in TechPreview/DevPreview in 4.20, not in Default, and thefeature set changes won’t be backported, making this method stable for 4.20.).
+	// This avoids the API call to get the FeatureGate resource
+	if optr.fgHandler != nil && !optr.fgHandler.Enabled(features.FeatureGateSigstoreImageVerificationPKI) {
+		if _, err := optr.configClient.ConfigV1().ClusterImagePolicies().Get(context.TODO(), "openshift", metav1.GetOptions{}); err == nil {
 			coStatusCondition.Status = configv1.ConditionFalse
 			coStatusCondition.Reason = "ConflictingClusterImagePolicy"
 			coStatusCondition.Message = "ClusterImagePolicy resource named 'openshift' conflicts with the cluster default ClusterImagePolicy object and blocks upgrades. Please delete the 'openshift' ClusterImagePolicy resource and reapply it with a different name if needed"