move_group_interface: No need to spin after publishing

[JafarAbdi]

Description

Publishing doesn't require spinning, this is sometimes causing an exception Node '/move_group_interface_node' has already been added to an executor

Checklist

• Required by CI: Code is auto formatted using clang-format
• Extend the tutorials / documentation reference
• Document API changes relevant to the user in the MIGRATION.md notes
• Create tests, which fail without this PR reference
• Include a screenshot if changing a GUI
• While waiting for someone to review your request, please help review another open pull request to support the maintainers

[codecov]

Codecov Report

Merging #1250 (ade6ee9) into main (59a1307) will increase coverage by 1.28%.
The diff coverage is 77.64%.

@@            Coverage Diff             @@
##             main    #1250      +/-   ##
==========================================
+ Coverage   60.16%   61.44%   +1.28%     
==========================================
  Files         274      274              
  Lines       24830    24936     +106     
==========================================
+ Hits        14937    15319     +382     
+ Misses       9893     9617     -276     

Impacted Files	Coverage Δ
...llision_detection/src/collision_octomap_filter.cpp	0.00% <0.00%> (ø)
.../collision_detection_fcl/src/collision_env_fcl.cpp	91.52% <ø> (ø)
...ory_processing/iterative_spline_parameterization.h	100.00% <ø> (ø)
...ctory_processing/iterative_time_parameterization.h	100.00% <ø> (ø)
...ry_processing/time_optimal_trajectory_generation.h	100.00% <ø> (ø)
...veit/trajectory_processing/time_parameterization.h	100.00% <ø> (ø)
...ocessing/src/iterative_spline_parameterization.cpp	84.46% <0.00%> (-1.07%)	⬇️
...processing/src/iterative_time_parameterization.cpp	91.99% <0.00%> (-1.32%)	⬇️
...ccupancy_map_monitor/src/occupancy_map_monitor.cpp	20.13% <ø> (ø)
...ics_plugin_loader/src/kinematics_plugin_loader.cpp	69.75% <ø> (ø)
... and 26 more

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