[widgets][dataformateditor] Add parent to QMenu
Issue found when testing with PySide2. From the documentation, QPushButton::setMenu does not take ownership of the menu. With PySide2, the menu is garbage collected but the actions created from it are not completely destroyed as it seems. Giving the menu a proper parent ensure that its lifetime is correctly handled.
248_fix_button_menu_lifetime in 10 minutes and 6 seconds (queued for 8 seconds)4 jobs for