[plasmaextras/modelcontextmenu] Work around QML overload resolution bug
addMenuItem is overloaded and because of QTBUG-117922 we pick the wrong one
Add an explicit value for the default parameter to work around that and force the right overload
addMenuItem is overloaded and because of QTBUG-117922 we pick the wrong one
Add an explicit value for the default parameter to work around that and force the right overload