[PlanarReflection] Reverted change (Lit.cs.hlsl)

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/Lit.cs.hlsl

     float3 normalWS;
     float perceptualRoughness;
     float coatMask;
-    int diffusionProfile;
+    uint diffusionProfile;
     float subsurfaceMask;
     float thickness;
     bool useThickObjectMode;