Update config.yaml.j2

roles/matrix-bridge-mautrix-instagram/templates/config.yaml.j2

@@ -132,7 +132,7 @@ bridge:
     missed_limit: 1000
     # If using double puppeting, should notifications be disabled
     # while the initial backfill is in progress?
-    disable_notifications: false
+    disable_notifications: true
   periodic_reconnect:
     # Interval in seconds in which to automatically reconnect all users.
     # This can be used to automatically mitigate the bug where Instagram stops sending messages.