Show that a partially-stated room updates current state with no_longer_in_room: False

```
SYNAPSE_TEST_LOG_LEVEL=INFO poetry run trial tests.handlers.test_federation.PartialJoinTestCase.test_failed_partial_join_is_clean
```

synapse/storage/controllers/persist_events.py

@@ -1114,6 +1114,9 @@ class EventsPersistenceStorageController:
             if ev_id != existing_state.get(key)
         }
 
+        logger.info("asdf _calculate_state_delta existing_state %s", existing_state)
+        logger.info("asdf _calculate_state_delta current_state %s", current_state)
+
         return DeltaState(to_delete=to_delete, to_insert=to_insert)
 
     async def _is_server_still_joined(

synapse/storage/databases/main/events.py

@@ -1131,6 +1131,8 @@ class PersistEventsStore:
     ) -> None:
         """Update the current state stored in the datatabase for the given room"""
 
+        logger.info("asdf state_delta: %s", state_delta)
+
         if state_delta.is_noop():
             return