Fix old API usage for Camera3D

[asinghvi17]

cc @ranocha - this should fix the issue.

[github-actions]

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[ranocha]

Thanks a lot. Please find below a question.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 86.38%. Comparing base (111075e) to head (c7dfadc).

Files	Patch %	Lines
ext/TrixiMakieExt.jl	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                                       Coverage Diff                                        @@
##           compathelper/new_version/2024-05-10-00-05-49-190-02195501927    #1940      +/-   ##
================================================================================================
- Coverage                                                         91.16%   86.38%   -4.78%     
================================================================================================
  Files                                                               453      453              
  Lines                                                             36457    36450       -7     
================================================================================================
- Hits                                                              33233    31486    -1747     
- Misses                                                             3224     4964    +1740     

Flag	Coverage Δ
unittests	86.38% <0.00%> (-4.78%)	⬇️

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[ranocha]

Thanks!