Announce context menus in Outlook 2016 and existance of submenus (#9189)
* Don't suppress collapsed / expanded states on menu items if the menu item does not have the hasPopup state, as these states could be denoting it is a sub menu.
* Handle special placeholder menu items in NetUI (such as MS Office context menus) when the menu appears but nothing real is focused. Bounce focus up to the menu itself for better presentation.