GTK4: Implement DW_MENU_AUTO and DW_MENU_POPUP. These weren't necessary on GTK3 and earlier, so the options were just ignored. In GTK4 they are required for creating the GActions so it functions more like OS/2 and Windows now.

[Desktop Entry]
Name=Dynamic Windows Test
Exec=@prefix@/bin/dwtest 
Terminal=false
MultipleArgs=false
Type=Application
Categories=Application;Development;X-Red-Hat-Base;