message: Call _new_system_callback in notify_on_timeout, too
diff: @@ -452,6 +452,12 @@ void MavsdkImpl::notify_on_timeout(const uint64_t uuid)
  if (_on_timeout_callback) {
  _on_timeout_callback(uuid);
  }
  +
  + std::lock_guard<std::mutex> lock(_new_system_callback_mutex);
  + if (_new_system_callback) {
  + auto temp_callback = _new_system_callback;
  + call_user_callback([temp_callback]() { temp_callback(); });
  + }
  }
  void MavsdkImpl::subscribe_on_new_system(Mavsdk::NewSystemCallback callback)
  