fix: Make submenu hover focus remain on the trigger and collapse submenus when hovering root menu (#8666)
* fix: hovering submenutrigger should keep focus on the trigger
also makes it so ArrowRight still moves to the submenu after hovering, not sure if this breaks VO moving focus to the dismiss button though...
* make submenu close if any other item in the same menu is focused
this fixes the case where the user hovers a root menu level item when there are multiple submenu levels open but only the last one closes