Only use plugin finalizer mode if qt_finalize_target is called at the end of the user project (which we can't really check, the user has to ensure that) or when qt_finalize_target is automatically defer-called by CMake 3.19+ (which is done by qt_add_executable). This removes the previous behavior of using the finalizer mode if qt_import_plugins is called. Instead the old regular mode is used if the above preconditions are not met. The removed behavior had ordering issues if qt_import_plugins was called before target_link_libraries. The dependency walking would be done before Qt dependencies were added and thus no plugins would be linked. Amends 6fcc272ac9dcf1d6d65de1bdf3138722ba63a902 Task-number: QTBUG-80863 Task-number: QTBUG-92933 Task-number: QTBUG-94030 Change-Id: I78702b653a35596f5581c2f4282b2336f0124e60 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>