Refactored Autonym font feature

Removed old and ugly steps that are no longer used. Introduced one
small and beautiful step.

Fixes three failed Jenkins jobs:

https://wmf.ci.cloudbees.com/view/r-uls/job/UniversalLanguageSelector-co
mmons.wikimedia.beta.wmflabs.org-linux-firefox/128/testReport/(root)/Aut
onym%20font/

Change-Id: I68da4364592514d161996517875a06fd2942ff0f