xdg-shell: drop wlr_xdg_toplevel_set_fullscreen_event
Instead, compositors can read relevant values from wlr_xdg_toplevel.requested.
This is a breaking change: wlr_xdg_toplevel.events.set_fullscreen
listeners now receive a wlr_xdg_surface
and are supposed to read wlr_xdg_toplevel.requested.fullscreen{,_output}
.
Edited by Kirill Primak