Don’t ignore rgba(1,1,1,1) color properties

Do not ignore rgba(1,1,1,1) material properties when importing glTF1. While a white diffuse color may be the default value for a default assimp material, `1,1,1,1` is a very explicit color value for ambient/specular/emissive color properties.

Closes #1434

code/glTFImporter.cpp

@@ -174,11 +174,9 @@ inline void SetMaterialColorProperty(std::vector<int>& embeddedTexIdxs, Asset& r
     else {
         aiColor4D col;
         CopyValue(prop.color, col);
-        if (col.r != 1.f || col.g != 1.f || col.b != 1.f || col.a != 1.f) {
         mat->AddProperty(&col, 1, pKey, type, idx);
     }
 }
-}
 
 void glTFImporter::ImportMaterials(glTF::Asset& r)
 {