This makes the the cursor drawing be handled by the Wayland compositor
unless the cursor shape is not in the standard cursor shape set.
For custom cursor shape, Blender still manually draws and handles these.
Removal of the X11 cursors was done because:
1. Greatly simplifies the code (and compositors not supporting the cursor
shape protocol will fallback to Blenders built in cursors).
2. On a lot of compositors the X11 cursor theme is not set per default,
this would lead to us falling back to a default theme. This would
in almost all cases not match the actual cursor theme of the user.
The fallback theme would also look quite ugly and the cursor size
would be inconsistent with the rest of the system.
Pull Request: https://projects.blender.org/blender/blender/pulls/140366
232b106e64