[44] frames: Disable XDND support on the frame window

Jonas Ådahl requested to merge cherry-pick-d643eb5c into gnome-44

All X11 surfaces created by gtk4 claim to support XDND via the XdndAware property. This was leading some clients, e.g. Qt, to consider the frame window as drop target instead of the client window.

Avoid this issue by removing the XdndAware property again after gtk has created the surface.

Closes: #2715 (closed) Part-of: !2978 (merged)

(cherry picked from commit d643eb5c)

Merge request reports