When a platform menu bar is used, the QMenuBar is hidden, so shortcuts
for QActions attached only to it do not work.
Extend the macOS-specific code to treat such menubars as visible to
other platforms, to make the shortcuts work.
The exception is made for internal QMenuBar shortcuts, which are
forwarded to the platform menu. A follow-up change will add support
for this to QDBusPlatformMenu. The updateGeometries() method is called
for platform menu bars too to make sure the internal shortcuts are
registered even if the global menu is in use.
Add two cases to the tst_QMenuBar::activatedCount() test to test
both native and non-native menu bars when possible (it now passes with
native menu bars too).
Change-Id: I2d7128512719ac199cd3f8f7ba28333d04d84ed4
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
287f548d4c