Silence noisy sky error

[chapulina]

🦟 Bug fix

Summary

This was brought up during the tutorial party. This warning is always printed when using ogre1, even when the user is not trying to enable the sky. This change makes it so the error is only printed for users trying to enable sky.

Keeping this as draft until the stable release, it's not a critical bugfix.

CC @ammaar8

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• 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

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[codecov]

Codecov Report

Merging #282 (0668a02) into main (e0bf818) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #282      +/-   ##
==========================================
- Coverage   57.54%   57.53%   -0.02%     
==========================================
  Files         159      159              
  Lines       15590    15591       +1     
==========================================
- Hits         8971     8970       -1     
- Misses       6619     6621       +2     

Impacted Files	Coverage Δ
src/base/BaseScene.cc	74.95% <0.00%> (-0.13%)	⬇️
...e/ignition/rendering/base/BaseGaussianNoisePass.hh	96.66% <0.00%> (-3.34%)	⬇️

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