Mitigate large futures

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

src/admin/user/commands.rs

@@ -688,7 +688,9 @@ pub(super) async fn force_leave_room(
 		return Err!("{user_id} is not joined in the room");
 	}
 
-	leave_room(self.services, &user_id, &room_id, None).await?;
+	leave_room(self.services, &user_id, &room_id, None)
+		.boxed()
+		.await?;
 
 	self.write_str(&format!("{user_id} has left {room_id}.",))
 		.await