On: Improving cursor rendering on Wayland

[jchw]

Gah, everyone uses different nomenclature when referring to Wayland protocols. Here's an MR for GTK:

https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/6212

No negative signals for either Mutter or GTK here, but no strong positive signals either. Let's make sure we add our thumbs up, at least.