QKqueueFileSystemWatcherEngine cannot monitor socket files

The  QKqueueFileSystemWatcherEngine uses qt_safe_open on the paths given to get an fd for kqueue/kevent.

However according to open (2)

     [EOPNOTSUPP]       An attempt was made to open a socket (not currently implemented).

So for example the tests for kwayland seem to fail as they wait for a notification that the socket file has gone awaay.

I'm not sure what the best approach would be the monitor socket files.