Fix bug in cartesian planner: Merges trajectory point data into robot configuration

Replaces assignment of joint values with a merge operation to
incorporate all data from the trajectory point, ensuring that
the robot configuration is fully updated with the latest state.

Author: yijiangh

src/compas_fab/backends/pybullet/backend_features/pybullet_plan_cartesian_motion.py

@@ -804,7 +804,8 @@ def plan_cartesian_motion_frame_waypoints(
                     tolerance_position=waypoints.tolerance_orientation,
                     tolerance_orientation=waypoints.tolerance_orientation,
                 )
-                intermediate_state.robot_configuration.joint_values = trajectory.points[-1].joint_values
+                # intermediate_state.robot_configuration.joint_values = trajectory.points[-1].joint_values
+                intermediate_state.robot_configuration.merge(trajectory.points[-1])
                 if options["verbose"]:
                     print(
                         "Segment {} of {}, j={}, t = {}, Interpolated Frame = {}".format(