[TextDisplayMenu] Cannot have sub-menu of 1 item

[patridge]

If you have a menu with a single sub-item, it will not be recognized as a sub-menu. Selecting the resulting menu item it will neither trigger Selected nor open a sub-menu.

var menuItems = new MenuItem[]
{
    ...
    new MenuItem("Options", subItems: new MenuItem[]
    {
        new MenuItem($"Version {version}"),
    }),
};