reverted accidental change to default HD material

decal shader only needs extra vertex attributes if drawing mesh decals

com.unity.render-pipelines.high-definition/HDRP/Material/Decal/ShaderPass/DecalSharePass.hlsl

 #error Undefine_SHADERPASS
 #endif
 
+#if (SHADERPASS == SHADERPASS_MESHDECALS)
 #define ATTRIBUTES_NEED_NORMAL
 #define ATTRIBUTES_NEED_TANGENT // Always present as we require it also in case of anisotropic lighting
 #define ATTRIBUTES_NEED_TEXCOORD0
 #define VARYINGS_NEED_TEXCOORD0
+#endif
 
 // This include will define the various Attributes/Varyings structure
 #include "../../ShaderPass/VaryingMesh.hlsl"

com.unity.render-pipelines.high-definition/HDRP/RenderPipelineResources/DefaultHDMaterial.mat

 Material:
   serializedVersion: 6
   m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabParentObject: {fileID: 0}
   m_PrefabInternal: {fileID: 0}
   m_Name: DefaultHDMaterial
   m_Shader: {fileID: 4800000, guid: 6e4ae4064600d784cac1e41a9e6f2e59, type: 3}
     - _EnableBlendModeAccurateLighting: 1
     - _EnableBlendModePreserveSpecularLighting: 1
     - _EnableFogOnTransparent: 1
-    - _EnableGeometricSpecularAA: 0
     - _EnableMotionVectorForVertexAnimation: 0
     - _EnablePerPixelDisplacement: 0
     - _EnableSpecularOcclusion: 0
     - _GlossMapScale: 1
     - _Glossiness: 0.5
     - _GlossyReflections: 1
-    - _HdrpVersion: 1
     - _HeightAmplitude: 0.01
     - _HeightCenter: 0.5
     - _HeightMapParametrization: 1
     - _Parallax: 0.02
     - _PreRefractionPass: 0
     - _RefractionMode: 0
-    - _RefractionModel: 0
-    - _SSRefractionProjectionModel: 0
     - _SSSAndTransmissionType: 0
     - _ShiverDirectionality: 0.5
     - _ShiverDrag: 0.2
     - _SmoothnessTextureChannel: 0
-    - _SpecularAAScreenSpaceVariance: 0.1
-    - _SpecularAAThreshold: 0.2
     - _SpecularHighlights: 1
     - _SrcBlend: 1
     - _StencilRef: 2
     - _ZTestModeDistortion: 8
     - _ZWrite: 1
     m_Colors:
-    - _BaseColor: {r: 0.16078432, g: 0.16078432, b: 0.16078432, a: 1}
-    - _Color: {r: 0.16078427, g: 0.16078427, b: 0.16078427, a: 1}
+    - _BaseColor: {r: 0.72794116, g: 0.72794116, b: 0.72794116, a: 1}
+    - _Color: {r: 0.72794116, g: 0.72794116, b: 0.72794116, a: 1}
-    - _EmissionColor: {r: 1, g: 1, b: 1, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
     - _EmissiveColor: {r: 0, g: 0, b: 0, a: 1}
     - _InvPrimScale: {r: 1, g: 1, b: 0, a: 0}
     - _IridescenceThicknessRemap: {r: 0, g: 1, b: 0, a: 0}