Function dispatch_menu_item_clicks 

pub fn dispatch_menu_item_clicks(
    clicks: MessageReader<'_, '_, ClickEvent>,
    items: Query<'_, '_, &MenuItemButton>,
    parents: Query<'_, '_, &ChildOf>,
    store: ResMut<'_, PropertyStore>,
    menu_out: MessageWriter<'_, MenuClicked>,
)

<menu> item click dispatcher. Emits MenuClicked and closes the menu panel in the same tick.