Fix material for decal, was incorrectly using mask source blending

TestProjects/HDRP_Tests/Assets/GraphicTests/Scenes/9x_Other/9001_Decals/Decal_All_ColorTint.mat

   serializedVersion: 6
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInternal: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
   m_Name: Decal_All_ColorTint
   m_Shader: {fileID: 4800000, guid: 1d64af84bdc970c4fae0c1e06dd95b73, type: 3}
   m_ShaderKeywords: _ALBEDOCONTRIBUTION _COLORMAP _MASKMAP _NORMALMAP
   m_CustomRenderQueue: -1
   stringTagMap: {}
-  disabledShaderPasses: []
+  disabledShaderPasses:
+  - DBufferMesh_M
+  - DBufferMesh_AO
+  - DBufferMesh_MAO
+  - DBufferMesh_MAOS
+  - DBufferMesh_MS
+  - DBufferMesh_AOS
   m_SavedProperties:
     serializedVersion: 3
     m_TexEnvs:
     - _DoubleSidedEnable: 0
     - _DoubleSidedNormalMode: 1
     - _Drag: 1
+    - _DrawOrder: 0
     - _DstBlend: 0
     - _EmissiveColorMode: 1
     - _EnableBlendModePreserveSpecularLighting: 1
     - _InvTilingScale: 1
     - _LinkDetailsWithBase: 1
     - _MaskBlendMode: 4
-    - _MaskBlendSrc: 1
+    - _MaskBlendSrc: 0
     - _MaskmapAO: 0
     - _MaskmapMetal: 0
     - _MaskmapSmoothness: 1

TestProjects/HDRP_Tests/Assets/GraphicTests/Scenes/9x_Other/9001_Decals/Decal_BlendMask.mat

   serializedVersion: 6
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInternal: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
   m_Name: Decal_BlendMask
   m_Shader: {fileID: 4800000, guid: 1d64af84bdc970c4fae0c1e06dd95b73, type: 3}
   m_ShaderKeywords: _ALBEDOCONTRIBUTION _COLORMAP _MASKMAP _NORMALMAP
   m_CustomRenderQueue: -1
   stringTagMap: {}
-  disabledShaderPasses: []
+  disabledShaderPasses:
+  - DBufferMesh_M
+  - DBufferMesh_AO
+  - DBufferMesh_MAO
+  - DBufferMesh_MAOS
+  - DBufferMesh_MS
+  - DBufferMesh_AOS
   m_SavedProperties:
     serializedVersion: 3
     m_TexEnvs:
     - _DoubleSidedEnable: 0
     - _DoubleSidedNormalMode: 1
     - _Drag: 1
+    - _DrawOrder: 0
     - _DstBlend: 0
     - _EmissiveColorMode: 1
     - _EnableBlendModePreserveSpecularLighting: 1
     - _InvTilingScale: 1
     - _LinkDetailsWithBase: 1
     - _MaskBlendMode: 4
-    - _MaskBlendSrc: 1
+    - _MaskBlendSrc: 0
     - _MaskmapAO: 0
     - _MaskmapMetal: 0
     - _MaskmapSmoothness: 1

TestProjects/HDRP_Tests/Assets/GraphicTests/Scenes/9x_Other/9001_Decals/Decal_BlendMask_Factor05.mat

   serializedVersion: 6
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInternal: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
   m_Name: Decal_BlendMask_Factor05
   m_Shader: {fileID: 4800000, guid: 1d64af84bdc970c4fae0c1e06dd95b73, type: 3}
   m_ShaderKeywords: _ALBEDOCONTRIBUTION _COLORMAP _MASKMAP _NORMALMAP
   m_CustomRenderQueue: -1
   stringTagMap: {}
-  disabledShaderPasses: []
+  disabledShaderPasses:
+  - DBufferMesh_M
+  - DBufferMesh_AO
+  - DBufferMesh_MAO
+  - DBufferMesh_MAOS
+  - DBufferMesh_MS
+  - DBufferMesh_AOS
   m_SavedProperties:
     serializedVersion: 3
     m_TexEnvs:
     - _DoubleSidedEnable: 0
     - _DoubleSidedNormalMode: 1
     - _Drag: 1
+    - _DrawOrder: 0
     - _DstBlend: 0
     - _EmissiveColorMode: 1
     - _EnableBlendModePreserveSpecularLighting: 1
     - _InvTilingScale: 1
     - _LinkDetailsWithBase: 1
     - _MaskBlendMode: 4
-    - _MaskBlendSrc: 1
+    - _MaskBlendSrc: 0
     - _MaskmapAO: 0
     - _MaskmapMetal: 0
     - _MaskmapSmoothness: 1

TestProjects/HDRP_Tests/Assets/GraphicTests/Scenes/9x_Other/9001_Decals/Decal_BlendMask_NoAlbedo.mat

   serializedVersion: 6
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInternal: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
   m_Name: Decal_BlendMask_NoAlbedo
   m_Shader: {fileID: 4800000, guid: 1d64af84bdc970c4fae0c1e06dd95b73, type: 3}
   m_ShaderKeywords: _COLORMAP _MASKMAP _NORMALMAP
   m_CustomRenderQueue: -1
   stringTagMap: {}
-  disabledShaderPasses: []
+  disabledShaderPasses:
+  - DBufferMesh_M
+  - DBufferMesh_AO
+  - DBufferMesh_MAO
+  - DBufferMesh_MAOS
+  - DBufferMesh_MS
+  - DBufferMesh_AOS
   m_SavedProperties:
     serializedVersion: 3
     m_TexEnvs:
     - _DoubleSidedEnable: 0
     - _DoubleSidedNormalMode: 1
     - _Drag: 1
+    - _DrawOrder: 0
     - _DstBlend: 0
     - _EmissiveColorMode: 1
     - _EnableBlendModePreserveSpecularLighting: 1
     - _InvTilingScale: 1
     - _LinkDetailsWithBase: 1
     - _MaskBlendMode: 4
-    - _MaskBlendSrc: 1
+    - _MaskBlendSrc: 0
     - _MaskmapAO: 0
     - _MaskmapMetal: 0
     - _MaskmapSmoothness: 1