(Re-)Implemented Light3D's property "shadow_reverse_cull_face" #77238
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servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
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The parameter shadow_reverse_cull_face is now passed to the shadow pass so that the mesh back-faces are used for shadow map calculation.
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The parameter "shadow_reverse_cull_face" is now passed to the shadow pass so that the mesh back-faces can be used for shadow map calculation. Fixes #50005.
While in 3.x the "shadow_bias" had to be negative for reversed cull faces, in 4.x it seems to work well with positive values. In contrast, the property "shadow_normal_bias" seems not to be normalized as it makes shadow acne on the back-faces worse.