(Option to) display flag emoji on Space key, next to language

[henrebotha]

Is your feature request related to a problem? Please describe.

I switch between languages relatively infrequently, and often forget to switch back to my primary language, leaving me struggling with suggestions until I notice, and polluting my secondary-language dictionary with primary-language words.

Describe the solution you'd like
In the Space key, where the currently-selected language is displayed, also display the/a corresponding country flag. This will make it much easier to notice when I've switched languages.

E.g.:

🇬🇧 English

🇺🇸 English

🇳🇱 Nederlands

I'm not sure about how to handle things like US vs UK English, though. Or even worse, something like South African English, which is its own dialect but isn't meaningfully represented by the South African flag (because South Africa has 11 official languages). Maybe this could be implemented only for a hardcoded list of languages where a sensible flag exists.

Use case
I would like to type in different languages with ease, but currently I feel discouraged from doing this because of the risk of cross-contamination between dictionaries, as well as the awkwardness of unexpectedly struggling against the suggestions.

App version
3.6 (Obtainium/GitHub APK)