If the OS supports it, detect windows that have a ghost window (they have hung) and...

If the OS supports it, detect windows that have a ghost window (they have hung) and skip them when navigating by window, when checking for a higher API on Window NVDAObjects, and when processing MSAA winEvents. This will stop some lags / freezes when navigating top-level windows with object navigatin while a window has hung. It may also stop some other freezes as UIAHasServerSideProvider also would freeze on this ghosted windows.