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/iron/pr-1580
Your branch is up to date with 'origin/iron'.

You are currently cherry-picking commit fbb893b.
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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 87.45%. Comparing base (3abe840) to head (8e8faf2).

Additional details and impacted files

@@            Coverage Diff             @@
##             iron    #1582      +/-   ##
==========================================
- Coverage   87.45%   87.45%   -0.01%     
==========================================
  Files         101      101              
  Lines        8078     8080       +2     
  Branches      711      711              
==========================================
+ Hits         7065     7066       +1     
- Misses        717      718       +1     
  Partials      296      296              

Flag	Coverage Δ
unittests	87.45% <50.00%> (-0.01%)	⬇️

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Files	Coverage Δ
hardware_interface/src/component_parser.cpp	93.69% <50.00%> (-0.40%)	⬇️