[JSB] Fix joint_state message corruption issue (backport #2217)

[mergify]

This fixes the issue reported by @christophfroehlich that sometimes the joint state message is corrupted with incorrect data.

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This is an automatic backport of pull request #2217 done by [Mergify](https://mergify.com).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.41%. Comparing base (2ab5606) to head (a079284).
⚠️ Report is 1 commits behind head on jazzy.

Additional details and impacted files

@@            Coverage Diff             @@
##            jazzy    #2218      +/-   ##
==========================================
+ Coverage   84.38%   84.41%   +0.03%     
==========================================
  Files         153      153              
  Lines       15116    15141      +25     
  Branches     1338     1340       +2     
==========================================
+ Hits        12755    12781      +26     
  Misses       1873     1873              
+ Partials      488      487       -1     

Flag	Coverage Δ
unittests	84.41% <100.00%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
..._state_broadcaster/src/joint_state_broadcaster.cpp	88.17% <100.00%> (+0.60%)	⬆️
..._broadcaster/test/test_joint_state_broadcaster.cpp	97.35% <100.00%> (+0.14%)	⬆️

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[christophfroehlich]

Is this related?

    [ RUN      ] JointStateBroadcasterTest.CorrectMappingWhenInterfaceReadFailsTest
    [INFO] [1773784257.686159051] [joint_state_broadcaster]: Publishing state interfaces defined in 'joints' and 'interfaces' parameters.
    [WARN] [1773784257.686193436] [joint_state_broadcaster]: Mapping from 'position' to interface 'position' will not be done, because 'position' is defined in 'interface' parameter.
Error: ROR] [1773784257.686952976] [joint_state_broadcaster]: Failed to parse robot description. Will publish all the interfaces with 'position', 'velocity' and 'effort'
    terminate called after throwing an instance of 'std::length_error'
      what():  basic_string::_M_create
    Stack trace (most recent call last):

[christophfroehlich]

@saikishor tests repeatedly fail with the mentioned error, I've never seen those before

[saikishor]

@saikishor tests repeatedly fail with the mentioned error, I've never seen those before

Sorry, I'll check it in some time

[christophfroehlich]

do we need this fix for the tests in other branches as well?