Fix alpha blending in shader template

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Templates/subshader.template

-SubShader 
+SubShader
 {
 ${Tags}
 ${Blending}
 
 	LOD ${LOD}
-	
+
-	#pragma surface surf ${LightingFunctionName} ${VertexShaderDecl}
+	#pragma surface surf ${LightingFunctionName} ${VertexShaderDecl} keepalpha
 	#pragma glsl
 	#pragma debug
 
 
-	struct Input 
+	struct Input
 	{
 ${ShaderInputs}
 	};
 		UNITY_INITIALIZE_OUTPUT(Input,o);
 ${VertexShaderBody}
 	}
-  
-	void surf (Input IN, inout ${SurfaceOutputStructureName} o) 
+
+	void surf (Input IN, inout ${SurfaceOutputStructureName} o)
+	    o.Alpha = 1;
 ${PixelShaderBody}
 	}
 	ENDCG