Update the MenuModel to use the same context as the PopupModel

[NicholasBoll]

💡 Suggestion

Update the MenuModel to use the same context as the PopupModel. This will allow Menu to use the same components as Popup like Popup.CloseIcon. I don't see a downside or breaking change to this.

Motivation

All other popup-type components like Modal, Dialog, etc use the same model context as the PopupModel. The Menu doesn't follow this. If you want to add a Popup.CloseIcon, you have to hoist the menu model and pass it to the CloseIcon component.