[backport fortress] Fixed light visual in OGRE (#862)

[ahcorde]

🦟 Bug fix

Summary

Related with this issue gazebosim/gz-sim#1948 and backport #862

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 #864 (b84838e) into ign-rendering6 (9421565) will not change coverage.
The diff coverage is n/a.

❗ Current head b84838e differs from pull request most recent head 65a1c9c. Consider uploading reports for the commit 65a1c9c to get more accurate results

@@               Coverage Diff               @@
##           ign-rendering6     #864   +/-   ##
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  Coverage           79.61%   79.61%           
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  Files                 146      146           
  Lines               13445    13445           
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  Hits                10704    10704           
  Misses               2741     2741