After upgrading systemd from 258.x to 259~rc2-2.fc44 (rawhide), all XWayland applications (Steam, Bambu Studio, etc.) are forced to render at 100 % scale on HiDPI displays, regardless of the scaling factor set in GNOME Settings → Displays and regardless of whether experimental Mutter features are enabled or disabled.

Native Wayland applications continue to scale correctly in all configurations.
The regression is 100 % reproducible and is instantly fixed by downgrading any single systemd sub-package back to version 258 (even just systemd-udev is sufficient).

Steps to Reproduce:
- Run Fedora Rawhide with GNOME on Wayland (default session) on a HiDPI display.
- In Settings → Displays set scaling to 200 % (integer) or any fractional value if fractional scaling is enabled.
- Upgrade systemd: dnf upgrade systemd
- Re-logon to GNOME Wayland session
- Launch Steam or Bambu Studio.

Actual results:
XWayland windows are rendered at exactly 100 % scale → tiny, unreadable UI on 4K/3K displays.

Expected results:
XWayland clients are rendered using the configured display scale (200 % → clearly readable 2× enlarged UI), exactly as they were with systemd ≤ 258.

Reproducible: Always

systemd 258.2-1.fc44:
> xrdb -query
Xcursor.size:	48
Xcursor.theme:	Adwaita
Xft.antialias:	1
Xft.dpi:	192
Xft.hinting:	1
Xft.hintstyle:	hintslight
Xft.rgba:	none

systemd 259~rc2-2.fc44:
> xrdb -query
<no output at all — Xft.dpi resource is completely missing>