message: use gripper move in gripper_action when max_effort is close to 0
diff: @@ -48,7 +48,8 @@ void gripperCommandExecuteCallback(
  if (std::abs(target_width - state.width) < kSamePositionThreshold) {
  return true;
  }
  - if (target_width >= state.width) {
  + constexpr double kMinimumGraspForce = 1e-4;
  + if (std::abs(goal->command.max_effort) < kMinimumGraspForce or target_width >= state.width) {
  return gripper.move(target_width, default_speed);
  }
  return gripper.grasp(target_width, default_speed, goal->command.max_effort, grasp_epsilon.inner,
  