TouchPlugin: Reset the plugin with the initial values

[ahcorde]

🦟 Bug fix

Fixes gazebosim/gazebo_test_cases#387

Summary

When a TouchPlugin is resetted the initial state was not working properly, this PR should fix the issue

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #2132 (2d317d0) into gz-sim8 (923ccee) will decrease coverage by 0.01%.
Report is 13 commits behind head on gz-sim8.
The diff coverage is 62.50%.

❗ Current head 2d317d0 differs from pull request most recent head e8a3cd1. Consider uploading reports for the commit e8a3cd1 to get more accurate results

@@             Coverage Diff             @@
##           gz-sim8    #2132      +/-   ##
===========================================
- Coverage    65.45%   65.44%   -0.01%     
===========================================
  Files          323      323              
  Lines        30704    30707       +3     
===========================================
  Hits         20097    20097              
- Misses       10607    10610       +3     

Files Changed	Coverage Δ
src/systems/touch_plugin/TouchPlugin.hh	100.00% <ø> (ø)
src/systems/touch_plugin/TouchPlugin.cc	86.30% <62.50%> (-1.82%)	⬇️