[RM] Add error handling for missing plugin tags in URDF parsing (backport #2138)

[mergify]

Added a try-catch block statement to check the validity of type_it in hardware interface parser. It returns an error signifying the missing plugin in either hardware or transmission element

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This is an automatic backport of pull request #2138 done by Mergify.

[mergify]

Cherry-pick of c4aca5f has failed:

On branch mergify/bp/humble/pr-2138
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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 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 63.53%. Comparing base (a978e78) to head (49702ad).
Report is 1 commits behind head on humble.

Files with missing lines	Patch %	Lines
hardware_interface/src/component_parser.cpp	0.00%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           humble    #2145      +/-   ##
==========================================
- Coverage   63.58%   63.53%   -0.05%     
==========================================
  Files         112      112              
  Lines       12848    12852       +4     
  Branches     8662     8661       -1     
==========================================
- Hits         8169     8166       -3     
- Misses        790      794       +4     
- Partials     3889     3892       +3     

Flag	Coverage Δ
unittests	63.53% <0.00%> (-0.05%)	⬇️

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

Files with missing lines	Coverage Δ
hardware_interface/src/component_parser.cpp	90.33% <0.00%> (-1.55%)	⬇️

... and 1 file with indirect coverage changes

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