HDRenderLoop: Correct fix double sided

Assets/ScriptableRenderLoop/HDRenderLoop/Shaders/TemplateDisneyGGX.hlsl

 	output.tangentToWorld[1].w = 0;
 	output.tangentToWorld[2].w = 0;
 
-#ifdef SHADER_STAGE_FRAGMENT
-	#if defined(_DOUBLESIDED_LIGHTING_FLIP) || defined(_DOUBLESIDED_LIGHTING_MIRROR)
-	output.cullFace = FRONT_FACE_TYPE(0); // To avoid a warning
-	#endif
-#endif
-
 	return PackVaryings(output);
 }
 
 	#else
 	// Mirror the normal with the plane define by vertex normal
 	float3 oppositeNormalWS = reflect(surfaceData.normalWS, vertexNormalWS);
-	#endif
+#endif
-	// surfaceData.normalWS = IS_FRONT_VFACE((input.cullFace >= 0.0 ? GetOdddNegativeScale() : -GetOdddNegativeScale()) >= 0.0, surfaceData.normalWS, oppositeNormalWS);
-	surfaceData.normalWS = IS_FRONT_VFACE((input.cullFace >= 0.0 ? GetOdddNegativeScale() : -GetOdddNegativeScale()) >= 0.0, surfaceData.normalWS, oppositeNormalWS);
+	surfaceData.normalWS = IS_FRONT_VFACE(input.cullFace, GetOdddNegativeScale() >= 0.0 ? surfaceData.normalWS : oppositeNormalWS, -GetOdddNegativeScale() >= 0.0 ? surfaceData.normalWS : oppositeNormalWS);
 #endif
 
 	surfaceData.materialId = 0;

Assets/TestScenes/HDTest/HDRenderLoopTest.unity

   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1614424510}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 2.58852, y: 1.27, z: -0.944}
+  m_LocalPosition: {x: 2.159, y: 1.27, z: -3.323}
   m_LocalScale: {x: 0.2, y: 0.2, z: 0.2}
   m_Children: []
   m_Father: {fileID: 0}

Assets/TestScenes/HDTest/Material/HDRenderLoopMaterials/test-alpha.mat

     m_Floats:
     - first:
         name: _AlphaCutoff
-      second: 0.309
+      second: 0.166
     - first:
         name: _AlphaCutoffEnable
       second: 1