fix(membership): check if server is in room to decide whether to do remote leaves

Signed-off-by: strawberry <strawberry@puppygock.gay>

src/api/client_server/membership.rs

@@ -1476,7 +1476,11 @@ pub async fn leave_all_rooms(user_id: &UserId) -> Result<()> {
 
 pub async fn leave_room(user_id: &UserId, room_id: &RoomId, reason: Option<String>) -> Result<()> {
 	// Ask a remote server if we don't have this room
-	if !services().rooms.metadata.exists(room_id)? && room_id.server_name() != Some(services().globals.server_name()) {
+	if !services()
+		.rooms
+		.state_cache
+		.server_in_room(services().globals.server_name(), room_id)?
+	{
 		if let Err(e) = remote_leave_room(user_id, room_id).await {
 			warn!("Failed to leave room {} remotely: {}", user_id, e);
 			// Don't tell the client about this error