Docker overlay devices showing up as "merged" on desktop

Issue Description

Using Docker (via DDEV) shows several devices "merged" on my desktop

Steps to Reproduce Issue

1. have a Docker-Project (e. g. DDEV)
2. start it: (here ddev start)
3. watch the desktop showing multiple device-icons "merged" for each running docker-container
4. 

Expected Behavior

"merged" devices should be (configurable?) invisible.

Additional Information

~/.config/xfce4/desktop/icons.screen0.yaml

has now > 50k rows ; 99% of those are like:

"/home/user/docker/overlay2/c74f078376f1c5684e59321ad2de73ec3e8e6e6b3e0d008aade05e72a26e0774/merged"
row: 4
col: 0
last_seen: 1761219839978517 

"/home/user/docker/overlay2/9744726c1924ca04a2c904ad19c55da7af7f21a4d086478682162fad601ace57/merged"
row: 10
col: 0
last_seen: 1741086164848542

... thousands more of them

Environment & Versions

• OS: Arch Linux x86_64
• Kernel: 6.12.59-1-lts
• Resolution: 1920x1080, 5120x1440
• DE: Xfce 4.20
• thunar 4.20.6 (Xfce 4.20)
• WM: Xfwm4
• WM Theme: Nordic Theme: Nordic [GTK2]
• Icons: Simply-White-Circles [GTK2], bloom [GTK3]