macOS Monterey has refactored some includes such that implicitly defined headers were no longer exposed and that in turns breaks building Qt on macOS 12.
Additional Resources:
- https://bugreports.qt.io/browse/QTBUG-97855
- https://codereview.qt-project.org/c/qt/qtbase/+/378706
- https://code.qt.io/cgit/qt/qtbase.git/commit/src/plugins/platforms/cocoa?id=dece6f5840463ae2ddf927d65eb1b3680e34a547
This is a backport of core#23580
Depends on D13934