Fixed Texcoord debug rendering.

Assets/ScriptableRenderLoop/HDRenderLoop/Material/Attributes.hlsl

     switch (paramId)
     {
     case DEBUGVIEWVARYING_TEXCOORD0:
-        result = float3(input.texCoord0 * 0.5 + 0.5, 0.0);
+        result = float3(input.texCoord0, 0.0);
-        result = float3(input.texCoord1 * 0.5 + 0.5, 0.0);
+        result = float3(input.texCoord1, 0.0);
-        result = float3(input.texCoord2 * 0.5 + 0.5, 0.0);
+        result = float3(input.texCoord2, 0.0);
-        result = float3(input.texCoord3 * 0.5 + 0.5, 0.0);
+        result = float3(input.texCoord3, 0.0);
         break;
     case DEBUGVIEWVARYING_VERTEX_TANGENT_WS:
         result = input.tangentToWorld[0].xyz * 0.5 + 0.5;