Fix potential crash when trying to read room info too early

src/Cache.cpp

@@ -1587,6 +1587,8 @@ RoomInfo
 Cache::singleRoomInfo(const std::string &room_id)
 {
         auto txn = ro_txn(env_);
+
+        try {
                 auto statesdb = getStatesDb(txn, room_id);
 
                 std::string_view data;
@@ -1607,6 +1609,10 @@ Cache::singleRoomInfo(const std::string &room_id)
                                                   e.what());
                         }
                 }
+        } catch (const lmdb::error &e) {
+                nhlog::db()->warn(
+                  "failed to read room info from db: room_id ({}), {}", room_id, e.what());
+        }
 
         return RoomInfo();
 }