add submap on rviz did not execute map merge.

[hiroyuki-s1]

Required Info:

• Operating System:
  • Ubuntu20.04
• Installation type:
  • source
• ROS Version
  • ROS2 galactic
• Version or commit hash:
  • 1c7fec4
• Laser unit:
  • Gazebo Laser

Steps to reproduce issue

Execute add submap on rviz.

Expected behavior

Submaps will be added.

Actual behavior

Not received on merge_maps_kinematics side

Additional information

Addsubmap on rviz did not execute map merge.
I checked the source code and noticed that the names /slam_toolbox/merge_submaps and /slam_toolbox/add_submap did not match.

bug fixed.
hiroyuki-s1@e7eeef8