Fix concurrent spinning of the test_node (backport #2721)

[mergify]

Resolves #2650

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This is an automatic backport of pull request #2721 done by Mergify.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.29%. Comparing base (139fb97) to head (7764bfc).
⚠️ Report is 1 commits behind head on jazzy.

Additional details and impacted files

@@            Coverage Diff             @@
##            jazzy    #2727      +/-   ##
==========================================
- Coverage   89.29%   89.29%   -0.01%     
==========================================
  Files         151      152       +1     
  Lines       17139    17153      +14     
  Branches     1422     1425       +3     
==========================================
+ Hits        15304    15316      +12     
- Misses       1267     1271       +4     
+ Partials      568      566       -2     

Flag	Coverage Δ
unittests	89.29% <100.00%> (-0.01%)	⬇️

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Files with missing lines	Coverage Δ
...ller_manager/test/test_ros2_control_node_launch.py	100.00% <ø> (ø)
controller_manager/test/test_test_utils.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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