kernel32/tests: Repeat test for SignalObjectAndWait multiple times to test wineserver wakeup cookie management.

The code for SELECT_SIGNAL_AND_WAIT in select_on() calls signal_object(). This might
wake up the same thread which is currently in the wineserver call. The value for
current->wait->cookie is initialized at the end of the function, and not defined yet
at this point.

fHasNewCorrDesc is only set on older versions of Windows that don't
set CorrDespIncrement, but it can't hurt to continue to set it.