Wallpaper doesn't change after closing lid
# Issue Description
Wallpaper in current workspace doesn't change after closing laptop lid for a bit and reopening it. "Next background" command doesn't make a difference either. Switching to a different workspace however allows the wallpaper to be updated.
# Steps to Reproduce Issue
Close laptop lid for about 20 seconds; open it again.
# Expected Behavior
Wallpaper should update when "Next background" is clicked.
# Additional Information
First mentioned in https://gitlab.xfce.org/xfce/xfdesktop/-/merge_requests/172.
Enabling settings: Stretched style, Random mode, Apply to all workspaces, Solid color, 20 minutes timeout
Wallpaper folder is not the default /usr/share/backgrounds/xfce.
When laptop is closed setting: Switch off display
# Environment & Versions
* OS distribution and version: Gentoo
* Overall Xfce version: 4.19.6
* xfdesktop version (git hash if not a release): 4f9b3162331447751bd7086b6073b0d28a70dbd6
* Windowing system (X11/Wayland): X11
* GTK Theme: Adwaita
* Icon Theme: Human
* UI Scale Factor: If this is about "Scale" setting in the Display dialog, it's 1.00.
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