ComplexMenuItem: Use the "menuitem" class for proper theming
ComplexMenuItem: Use the "menuitem" class for proper theming

Signed-off-by: Bertrand Lorentz <eb7ac131ef7bff6d2ebccd6e5bf9a7cb6485cf2c@gmail.com>

arfbtwn/hyena,arfbtwn/hyena,GNOME/hyena,GNOME/hyena