Improved solution to current_shortstatehash > next_batch. (59b62b1)

`current_shortstatehash` is now calculated from timeline which is already
upper-bound by the `next_batch` snapshot. Previously `current_shortstatehash`
was truly current and had to be disallowed from exceeding `next_batch` by
ignoring the room during sync until a future pass when these values finally
met that condition.

Signed-off-by: Jason Volk <jason@zemos.net>

src/admin/query/room_timeline.rs

@@ -36,7 +36,7 @@ pub(super) async fn last(&self, room_id: OwnedRoomOrAliasId) -> Result {
 		.services
 		.rooms
 		.timeline
-		.last_timeline_count(None, &room_id)
+		.last_timeline_count(None, &room_id, None)
 		.await?;
 
 	self.write_str(&format!("{result:#?}")).await