Fix metallic for SSS

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/Lit.hlsl

     bsdfData.normalWS = UnpackNormalOctEncode(float2(inGBuffer1.r, inGBuffer1.g));
 
     // metallic15 is range [0..12] if metallic data is needed
-    bool pixelHasMetallic = HasFeatureFlag(pixelFeatureFlags, MATERIALFEATUREFLAGS_LIT_SPECULAR_COLOR | MATERIALFEATUREFLAGS_LIT_SUBSURFACE_SCATTERING | MATERIALFEATUREFLAGS_LIT_TRANSMISSION);
-    float metallic = pixelHasMetallic ? metallic15 * (1.0 / GBUFFER_LIT_ANISOTROPIC_UPPER_BOUND) : 0.0;
+    bool pixelHasNoMetallic = HasFeatureFlag(pixelFeatureFlags, MATERIALFEATUREFLAGS_LIT_SPECULAR_COLOR | MATERIALFEATUREFLAGS_LIT_SUBSURFACE_SCATTERING | MATERIALFEATUREFLAGS_LIT_TRANSMISSION);
+    float metallic = pixelHasNoMetallic ? 0 : metallic15 * (1.0 / GBUFFER_LIT_ANISOTROPIC_UPPER_BOUND);
     bsdfData.diffuseColor = ComputeDiffuseColor(baseColor, metallic);
     bsdfData.fresnel0 = pixelHasSpecularColor ? Gamma20ToLinear(inGBuffer2.rgb) : ComputeFresnel0(baseColor, metallic, DEFAULT_SPECULAR_VALUE);