I closed firefox-android!75 (closed) because firefox-android is being ported into tor-browser. Once it is in place, I can just add fenix-torbrowserstringsxml:torbrowser_strings.xml to the TRANSLATION_FILES variable in .gitlab-ci.yml in the tor-browser repository.
@dan and @clairehurst with this change you can now safely add and delete android strings in the development tip. You might want to go through and delete any unused strings, which I'll open a separate issue for.
I also updated the wiki Localization notes to include a small section on Android strings. And I made some of the language apply to apply to both Fluent and Android string resources.