Ingo Klöcker authored Jan 30, 2023 and Ingo Klöcker committed Feb 27, 2023

On Windows and Apple OSs, we cannot use QLocale::system() because on
those OSs Qt ignores LANGUAGE (which is set by kxmlgui to the
application-specific languages configured by the user). We need to
check LANGUAGE ourselves.

CCBUG: 464694