It's the payload for modifying the wallpaper. Despite being checked it's blocked in Ventura 13.0.1.
We solved it by just deleting that part of the xml.
Export the profile
delete this text:
<key>allowWallpaperModification</key>
<true />
Import the profile (updating the current profile - or create new for testing, that your choice)
N.B. The pasted image is the default settings from FileWave Admin, for a more visual view.