Exclude images on app.ci to workaround ComparisonError (#76439)

Author: liangxia

clusters/core-ci/argocd/openshift-gitops_argocd.yaml

@@ -172,6 +172,12 @@ spec:
       kinds:
       - TaskRun
       - PipelineRun
+    - apiGroups:
+      - image.openshift.io
+      clusters:
+      - 'app.ci'
+      kinds:
+      - Image
   server:
     autoscale:
       enabled: false