Fix: Resolve race condition in MoveGroupSequenceAction (#3125)

(cherry picked from commit 6d94dfb)

# Conflicts:
#	moveit_planners/pilz_industrial_motion_planner/src/move_group_sequence_action.cpp

moveit_planners/pilz_industrial_motion_planner/src/move_group_sequence_action.cpp

@@ -65,9 +65,15 @@ MoveGroupSequenceAction::MoveGroupSequenceAction()
 void MoveGroupSequenceAction::initialize()
 {
   // start the move action server
+<<<<<<< HEAD
   RCLCPP_INFO_STREAM(LOGGER, "initialize move group sequence action");
+=======
+  RCLCPP_INFO_STREAM(getLogger(), "initialize move group sequence action");
+  // Use MutuallyExclusiveCallbackGroup to prevent race conditions in callbacks.
+  // See: https://github.com/moveit/moveit2/issues/3117 for details.
+>>>>>>> 6d94dfb71 (Fix: Resolve race condition in MoveGroupSequenceAction (#3125))
   action_callback_group_ =
-      context_->moveit_cpp_->getNode()->create_callback_group(rclcpp::CallbackGroupType::Reentrant);
+      context_->moveit_cpp_->getNode()->create_callback_group(rclcpp::CallbackGroupType::MutuallyExclusive);
   move_action_server_ = rclcpp_action::create_server<moveit_msgs::action::MoveGroupSequence>(
       context_->moveit_cpp_->getNode(), "sequence_move_group",
       [](const rclcpp_action::GoalUUID& /* unused */,