Default cameraPassCountPerGpuFlush to 6

[darksylinc]

🦟 Bug fix

No ticket is associated.

But there is a relevant discussion in #323 (comment)

Summary

I thought cameraPassCountPerGpuFlush was already at default 6.

ign-gazebo/src/gui/plugins/scene3d/Scene3D.cc should already be setting this value on the GUI side.

Same goes for ign-gazebo/src/systems/sensors/Sensors.cc

I don't want to think of the implications of setting this value to 6 on already released versions. It's probably harmless. But anyway, the API was introduced in Edifice, Fortress still defaults to legacy; it makes sense for Garden to start defaulting to non-legacy mode.

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)
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[codecov]

Codecov Report

Merging #601 (aff851d) into main (8bb21b4) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #601      +/-   ##
==========================================
+ Coverage   53.55%   53.60%   +0.04%     
==========================================
  Files         214      214              
  Lines       21319    21319              
==========================================
+ Hits        11417    11427      +10     
+ Misses       9902     9892      -10     

Impacted Files	Coverage Δ
ogre2/src/Ogre2Scene.cc	78.28% <ø> (+1.48%)	⬆️
include/ignition/rendering/base/BaseCamera.hh	66.05% <0.00%> (+0.36%)	⬆️

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