Aligns with what our CMake Info.plist has for macOS, what we do for
both qmake and CMake on iOS, and what Xcode generates for new projects.
The value is hard-coded to English instead of using $(DEVELOPMENT_LANGUAGE)
as the file will be used by both the Makefile and Xcode generator, and
only the latter does variable replacements for $(FOO).
Task-number: QTBUG-63324
Change-Id: I87e1cb14b14a9746b3603016c2ac69c252d37ff6
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
(cherry picked from commit d4b0e0d02eeb46b400ac726115d840dd05c74c51)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>