Small improvements to the error output in component parser to make debugging easier. (backport #1580)

[mergify]

---

This is an automatic backport of pull request #1580 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of fbb893b has failed:

On branch mergify/bp/humble/pr-1580
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Unmerged paths:
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	both modified:   hardware_interface/src/component_parser.cpp

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 86.98%. Comparing base (c04a16f) to head (7d594a9).
Report is 5 commits behind head on humble.

Additional details and impacted files

@@            Coverage Diff             @@
##           humble    #1581      +/-   ##
==========================================
- Coverage   87.00%   86.98%   -0.03%     
==========================================
  Files          97       97              
  Lines        7505     7508       +3     
  Branches      677      677              
==========================================
+ Hits         6530     6531       +1     
- Misses        688      690       +2     
  Partials      287      287              

Flag	Coverage Δ
unittests	86.98% <50.00%> (-0.03%)	⬇️

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Files	Coverage Δ
hardware_interface/src/component_parser.cpp	93.54% <50.00%> (-0.41%)	⬇️

... and 1 file with indirect coverage changes