message: Don't rely on rooms having timelines to use when checking widgets
diff: @@ -301,7 +301,9 @@ export class StopGapWidget extends EventEmitter {
  // requests timeline capabilities in other rooms down the road. It's just easier to manage here.
  for (const room of MatrixClientPeg.get().getRooms()) {
  // Timelines are most recent last
  - this.readUpToMap[room.roomId] = arrayFastClone(room.getLiveTimeline().getEvents()).reverse()[0].getId();
  + const roomEvent = arrayFastClone(room.getLiveTimeline()?.getEvents() || []).reverse()[0];
  + if (!roomEvent) continue; // force later code to think the room is fresh
  + this.readUpToMap[room.roomId] = roomEvent.getId();
  }
  // Attach listeners for feeding events - the underlying widget classes handle permissions for us
  