Fix RoomListResponse conversion.

src/modules/room/message.ts

@@ -57,12 +57,12 @@ function handleRoomListResponse(dispatch: AppDispatch, response): void {
     return;
   }
 
-  const map = {};
+  const payload = [];
   for (const [name, room] of rooms) {
-    map[name] = convertRoomListEntry(name, room);
+    payload.push(convertRoomListEntry(name, room));
   }
 
-  dispatch(roomSetAll(map));
+  dispatch(roomSetAll(payload));
 }
 
 function handleRoomMessageResponse(dispatch: AppDispatch, response): void {