Wrong state for QAbstractButton when pressed and its context menu is closed

Whether under X11 or under wayland (with wayland-egl), while, for example, a non-checkable tool-button is pressed, if its context menu is ALSO shown by pressing the right mouse button, then the pressed state of the button will persist after the menu is closed.

I think this is a sign of a more general issue with (context) menus and isn't specific to buttons or the pressed state (see QTBUG-36862).

toolbutton.cpp