Python Style Guide suggestion:

Thank you for contributing!

This could be done in a simpler way. Instead of storing a translation, simply delete the entry for that key from the dictionary, so that the default translation is used instead. This would change less code, and ensure the text remains correct when the user switches interface language.

I already do delete the dictionary entry from the "flagLabels" config entry here:

When I tested it, the flag label did switch to the correct translation after I changed the language, which indicates to me that it is using the default value and not a stored value in the config.

The reason why I also store the translations in default_flag_names is to make sure that the displayed name of the flag is updated after the function is called. Though after taking another look it seems like that's unnecessary and I can just call require_refresh() to accomplish the same thing.

I hope I correctly understood what you meant! If not please clarify further.