message: cleaner current position in obs world
diff: @@ -98,7 +98,7 @@ class ObservedWorld : public World {
  }
  Point2d CurrentEgoPosition() const {
  - return World::GetAgent(ego_agent_id_)->GetCurrentPosition();
  + return GetEgoAgent()->GetCurrentPosition();
  }
  void SetupPrediction(const PredictionSettings& settings);
  