message: FIX: Don't switch control method on user stop
  When the user stop is pressed, we don't want to "forget" in which control method
  each joint was, so that we can recover from the user stop error and continue the controller
diff: @@ -57,7 +57,6 @@ auto stop = [](franka::RobotState& state, JointMap& joints) {
  state.ddq_d = {0};
  for (auto& joint : joints) {
  - joint.second->control_method = boost::none;
  joint.second->stop_position = joint.second->position;
  joint.second->desired_position = joint.second->position;
  joint.second->desired_velocity = 0;
  