Fix basemap gen shader.

com.unity.render-pipelines.high-definition/HDRP/Material/TerrainLit/TerrainLit_Basemap_Gen.shader

 Shader "Hidden/HDRenderPipeline/TerrainLit_Basemap_Gen"
 {
+    Properties
+    {
+        [HideInInspector] _DstBlend("DstBlend", Float) = 0.0
+    }
+
     SubShader
     {
         Tags { "SplatCount" = "8" }
             v2f vert(appdata_t v)
             {
                 v2f o;
-                float3 positionWS = TransformObjectToWorld(v.vertex);
-                o.vertex = TransformWorldToHClip(positionWS);
+                o.vertex = TransformWorldToHClip(v.vertex);
                 o.texcoord = v.texcoord;
                 return o;
             }
             v2f vert(appdata_t v)
             {
                 v2f o;
-                float3 positionWS = TransformObjectToWorld(v.vertex);
-                o.vertex = TransformWorldToHClip(positionWS);
+                o.vertex = TransformWorldToHClip(v.vertex);
                 o.texcoord = v.texcoord;
                 return o;
             }