message: Fix controller switching bug when using same control interface
diff: @@ -252,8 +252,8 @@ bool FrankaHW::prepareSwitch(const std::list<hardware_interface::ControllerInfo>
  ControlMode stop_control_mode = getControlMode(arm_id_, stop_arm_claim_map);
  ControlMode requested_control_mode = current_control_mode_;
  - requested_control_mode |= start_control_mode;
  requested_control_mode &= ~stop_control_mode;
  + requested_control_mode |= start_control_mode;
  using std::placeholders::_1;
  using std::placeholders::_2;
  