fix(researchowl): notification annotations in the self-managed Application manifest

researchowl/argocd-app.yaml lives inside the app's own synced path, so it is
the source of truth: annotations applied only to the live object (or to the
argocd/ dump copy) get reverted by selfHeal.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

researchowl/argocd-app.yaml

@@ -3,6 +3,9 @@ kind: Application
 metadata:
   name: researchowl
   namespace: argocd
+  annotations:
+    notifications.argoproj.io/subscribe.on-sync-failed.telegram: "5138407666"
+    notifications.argoproj.io/subscribe.on-health-degraded.telegram: "5138407666"
 spec:
   project: default
   source: