remote join processing: get create event from state, not auth_chain (#12039)

A follow-up to #12005, in which I apparently missed that there are a bunch of other places that assume the create event is in the auth chain.

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py

index c0f642005f..c8356f233d 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -516,7 +516,7 @@ class FederationHandler:
             await self.store.upsert_room_on_join(
                 room_id=room_id,
                 room_version=room_version_obj,
-                auth_events=auth_chain,
+                state_events=state,
             )
 
             max_stream_id = await self._federation_event_handler.process_remote_join(