Restored wrongly deleted code.

Assets/ScriptableRenderLoop/HDRenderPipeline/Material/LayeredLit/LayeredLit.shader

         _BlendSize2("_BlendSize2", Range(0, 0.05)) = 0.0
         _BlendSize3("_BlendSize3", Range(0, 0.05)) = 0.0
 
+        _InheritBaseLayer1("_InheritBaseLayer1", Range(0, 1.0)) = 0.0
+        _InheritBaseLayer2("_InheritBaseLayer2", Range(0, 1.0)) = 0.0
+        _InheritBaseLayer3("_InheritBaseLayer3", Range(0, 1.0)) = 0.0
+
         _VertexColorHeightFactor("_VertexColorHeightFactor", Float) = 1.0
 
         _DistortionVectorMap("DistortionVectorMap", 2D) = "black" {}