Set the language name in its own language

I noticed that on the lower-left corner on the login page, the word "Français" is written... in English 🇬🇧

Could we ensure that the name of the language is translated into the same language? For instance, we would have "Français" when the language switch is set to French, "English" when it is set to English, "Italiano" in Italian, "Português" in European Portuguese, etc.