Build a simple widgets qmake project when targeting iOS in the CI.
This ensure we don't introduce basic regressions in the .pri / .prl
file generation.
Make sure to target the ios simulator, so we don't require any
code signing or provisioning profiles.
Pick-to: 6.4
Fixes: QTBUG-96058
Change-Id: I1a5564e838a5ce3cac89a37a5a4ddee74d3400f3
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>