This is a follow up fix to RT-35956. We should be able to exploit case where a mesh is only used with a material that contains only a selfIlluminationMap. We should remove the -Dprism.experimental.skipMeshNormalComputation property with this fix.   
            
- blocks
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                    JDK-8089605 [3D] TriangleMesh/MeshView high memory/CPU usage -           
- Closed
 
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                    JDK-8091319 The frame rate decreases by a factor of 4 when one point of a TriangleMesh is changed at every pulse -           
- Open
 
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- relates to
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                    JDK-8097904 Add a stopgap fix to improve mesh update performance for limited use cases that doesn't do 3d lighting in the scene -           
- Resolved
 
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                    JDK-8098122 Add support for vertex normals for meshes, in addition to smoothing groups -           
- Resolved
 
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