Change the option for `Français` into `French` to be consistent with the other language selections that are already in English.
(cherry picked from commit b616b97299)
* bpo-31159: fix language switch regex on unknown yet built languages. (#3039)
This fix a regex issue (a missing non-matching group around an 'or'
list) and the specific possible case where a translation is built but
not yet in known by the picker, but not explicitly listing possible
languages in the regex.
(cherry picked from commit 122081deef)
* bpo-31149: Doc: Add Japanese to the language switcher. (#3028)
(cherry picked from commit c82b7f332a)