Update smithay, with xwayland shell changes

[ids1024]

I see there's another breaking Smithay change (noticed this in #477).

For some reason Xwayland clients don't seem to show up now...

[ids1024]

Looks like the client does create the surface, xwayland shell surface sets the serial, and attach a buffer.

Maybe something relies on wl_surface being Some before it is?

[ids1024]

Updated for more Smithay changes. The Cow stuff is a bit annoying to deal with.

Xwayland still isn't working here.

[Drakulix]

XwmHandler::map_window_notify isn't called anymore, working on it.

[Drakulix]

Should be fixed by Smithay/smithay#1436

[Tipcat-98]

On cosmic-comp-4f076e0 I still get cosmic-comp crashes with certain xwayland apps and empty windows on others (only the title bar shows).

With error messages like:
May 21 21:23:44 tipcat cosmic-comp[6140]: Failed to handle X11 event

I'm on Nvidia

If you'd like to test:
Path of Building: Empty Window
Discord in X11 mode: cosmic-comp crash

[gabriele2000]

Agreed, Steam, for example, doesn't show up anymore.
Running on a laptop, hybrid Intel+Nvidia GPU setup