check relays asynchronously

src/tests/test_auto_sync.py

@@ -23,6 +23,7 @@ def test_auto_sync_triggers_post(monkeypatch):
         lock_vault=lambda: None,
         unlock_vault=lambda: None,
         start_background_sync=lambda: None,
+        start_background_relay_check=lambda: None,
     )
 
     called = False