Fix destroying wide angle camera

[iche033]

🦟 Bug fix

This fixes gz-sensors7's INTEGRATION_wide_angle_camera_test for me.

To test:

1. build gz-sensors7 in your worksapce

2. Runt the test with ogre render engine from your colcon workspace:

   RENDER_ENGINE_VALUES=ogre ./build/gz-sensors7/bin/INTEGRATION_wide_angle_camera
   

   The test should now pass instead of segfault.

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)
• 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 #718 (cd05b38) into gz-rendering7 (da973f5) will not change coverage.
The diff coverage is n/a.

❗ Current head cd05b38 differs from pull request most recent head 1bd01e4. Consider uploading reports for the commit 1bd01e4 to get more accurate results

@@              Coverage Diff               @@
##           gz-rendering7     #718   +/-   ##
==============================================
  Coverage          74.14%   74.14%           
==============================================
  Files                164      164           
  Lines              14351    14351           
==============================================
  Hits               10641    10641           
  Misses              3710     3710           

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