Fix shader compilation issue on PS4

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitData.hlsl

     // Emissive Intensity is only use here, but is part of BuiltinData to enforce UI parameters as we want the users to fill one color and one intensity
     builtinData.emissiveIntensity = _EmissiveIntensity; // We still store intensity here so we can reuse it with debug code
 
-    builtinData.emissiveColor = _EmissiveColor * builtinData.emissiveIntensity * lerp(1.0, surfaceData.baseColor, _AlbedoAffectEmissive);
+    builtinData.emissiveColor = _EmissiveColor * builtinData.emissiveIntensity * lerp(float3(1.0, 1.0, 1.0), surfaceData.baseColor.rgb, _AlbedoAffectEmissive);
 #ifdef _EMISSIVE_COLOR_MAP
     builtinData.emissiveColor *= SAMPLE_TEXTURE2D(_EmissiveColorMap, sampler_EmissiveColorMap, input.texCoord0).rgb;
 #endif