set Prune=false on core ClusterPolicies in stg (#8131)

Deleting these policies can cause security problems.
After this change is merged, to remove these policies, either a manual
intervention or an extra step to remove the annotation is required.

Signed-off-by: Francesco Ilario <[email protected]>

Author: filariow

components/policies/development/konflux-rbac/kustomization.yaml

@@ -5,3 +5,5 @@ resources:
 - restrict-binding-system-authenticated/
 - restrict-binding-system-authenticated-releng/
 - validate-rolebindings/
+commonAnnotations:
+  argocd.argoproj.io/sync-options: Prune=false

components/policies/development/namespace-lister/deny-virtual-domain/kustomization.yaml

@@ -2,3 +2,5 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
 - deny-virtual-domain.yaml
+commonAnnotations:
+  argocd.argoproj.io/sync-options: Prune=false