REFACTOR(prometheus): remove path sources

- from grafana and prometheus...
- Remove 'path: grafana' source from grafana Application
- Remove 'path: prometheus' source from prometheus Application
- ExternalSecret and Ingress will be managed manually via kubectl apply
  -k
- Fixes circular dependency issue causing Progressing state

grafana/argocd.yaml

@@ -20,7 +20,7 @@ spec:
     - repoURL: https://gitea0213.kro.kr/bluemayne/monitoring.git
       targetRevision: main
       ref: values
-    # Vault secrets from Git repository
+    # Additional resources (ExternalSecret, Ingress, etc.)
     - repoURL: https://gitea0213.kro.kr/bluemayne/monitoring.git
       targetRevision: main
       path: grafana