Comment 9 for bug 1859926

I think this is the same as
https://bugs.launchpad.net/ubuntu/+source/fonts-noto-color-emoji/+bug/1770783

This was fixed in webkitgtk:
https://bugs.webkit.org/show_bug.cgi?id=191976

But still not solved in Chrom* and Firefox:
https://bugs.chromium.org/p/chromium/issues/detail?id=908541#makechanges
https://bugzilla.mozilla.org/show_bug.cgi?id=1509988

Also, fontconfig upstream discourages to use play with conf file as suggested
https://gitlab.freedesktop.org/fontconfig/fontconfig/issues/136