Remove default velocity/acceleration/effort values in trajectory conversion utility

[marip8]

When converting tesseract trajectories to ROS trajectories, we automatically fill in velocities, accelerations, and efforts with default values (0), even if the tesseract trajectory doesn't have values for those quantities.

tesseract_ros2/tesseract_rosutils/src/utils.cpp

Lines 2312 to 2314 in bf7677f

	current_point.velocities = std::vector<double>(joint_names.size(), 0);
	current_point.accelerations = std::vector<double>(joint_names.size(), 0);
	current_point.effort = std::vector<double>(joint_names.size(), 0);

This causes problems with the latest version of ros2_control which expects only the quantities that are used to control the trajectory to be in the trajectory. For example, the joint_trajectory_controller will reject a trajectory where an all-zero vector of efforts is specified and the joint does not have an effort control interface. If we are not calculating velocity, acceleration, and/or effort, we shouldn't populate default values into the trajectory