Comment 22 for bug 1946599

I was able to narrow down the one missing path (required to make WebGL work) to `$SNAP/gnome-platform/usr/share/glvnd/egl_vendor.d/`.

That path contains one single file (`50_mesa.json`):

    {
        "file_format_version" : "1.0.0",
        "ICD" : {
            "library_path" : "libEGL_mesa.so.0"
        }
    }