Update spot light visual size

[iche033]

Signed-off-by: Ian Chen ichen@osrfoundation.org

🦟 Bug fix

Summary

Port spot light visual size fix from gazebosim/gazebo-classic#2947 by @peci1

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

Note to maintainers: Remember to use Squash-Merge

[codecov]

Codecov Report

Merging #306 (f7fd27c) into ign-rendering5 (997512d) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@               Coverage Diff               @@
##           ign-rendering5     #306   +/-   ##
===============================================
  Coverage           57.52%   57.53%           
===============================================
  Files                 159      159           
  Lines               15589    15589           
===============================================
+ Hits                 8968     8969    +1     
+ Misses               6621     6620    -1     

Impacted Files	Coverage Δ
include/ignition/rendering/base/BaseLightVisual.hh	30.09% <0.00%> (ø)
...e/ignition/rendering/base/BaseGaussianNoisePass.hh	100.00% <0.00%> (+3.33%)	⬆️

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[ahcorde]

The CI warning on Ubuntu is about Optix, not related with this PR