Publish a zero velocity command after reaching the dock position to ensure that the robot is stopped while waiting for the charge to start.

Basic Info

Description of contribution in a few bullet points

• Publish zero velocity after reaching the dock position

Description of documentation updates required from your changes

NA

Description of how this change was tested

Not tested, I just observed my robot continue in simulation environement after the dock while waiting the for the charge to start.

Future work that may be required in bullet points

Maybe another improvement #5567

For Maintainers:

• Check that any new parameters added are updated in docs.nav2.org
• Check that any significant change is added to the migration guide
• Check that any new features OR changes to existing behaviors are reflected in the tuning guide
• Check that any new functions have Doxygen added
• Check that any new features have test coverage
• Check that any new plugins is added to the plugins page
• If BT Node, Additionally: add to BT's XML index of nodes for groot, BT package's readme table, and BT library lists
• Should this be backported to current distributions? If so, tag with backport-*.