EnvironmentPreload: ignerr -> gzerr

[scpeters]

🦟 Bug fix

Fixes an ignerr instance on gz-sim7

Summary

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)
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[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (409efa7) 64.74% compared to head (4e9ab5c) 64.76%.

❗ Current head 4e9ab5c differs from pull request most recent head 205d9dd. Consider uploading reports for the commit 205d9dd to get more accurate results

Files	Patch %	Lines
.../systems/environment_preload/EnvironmentPreload.cc	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           gz-sim7    #2245      +/-   ##
===========================================
+ Coverage    64.74%   64.76%   +0.01%     
===========================================
  Files          357      357              
  Lines        29139    29138       -1     
===========================================
+ Hits         18867    18872       +5     
+ Misses       10272    10266       -6     

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