HotFix forward compilation from shaderGraph

Assets/ScriptableRenderLoop/HDRenderLoop/HDRenderLoop.cs

 ${PixelShaderInitialize}
 ${PixelShaderBody}
 
-/* this clip could be integrated earlier for optimisation */
+    /* this clip could be integrated earlier for optimisation */
+
+    /* HotFix to keep the PreIntegratedFGD shared texture sampler */
+    surfaceData.specularOcclusion = max(surfaceData.specularOcclusion, 10e-5f);
 }
 
 struct Attributes

Assets/ScriptableRenderLoop/HDRenderLoop/Material/Lit/Lit.template

         // ------------------------------------------------------------------
         //  forward pass
         // ------------------------------------------------------------------
-        /* TODOPAUL : Fix Compilation
 		Pass
         {
             Name "Forward" // Name is not used
 
             ENDHLSL
         }
-		*/
     }
     CustomEditor "LitGraphUI"
 }