x11-servers/xwayland-devel: drop direct consumers after a26e05c8

- Upstream releases frequently and independently from xorg-server
- Both ports have the same features and defaults
- Newer snapshots may decrease stability or break HiDPI patches

Note, wlroots-devel cannot stay on xwayland-devel without introducing
package conflicts when installing hyprland + cage/gamescope.

This reverts commit 4c432d12.
This reverts commit 09721d12.

(cherry picked from commit f12fd039)