Bug 2252900

I installed cinnamon 6.0 from the Fedora rawhide repo. So this version of cinnamon has (experimental) support for wayland. So when I log into a cinnamon wayland session, I see the following in ~/.cache/imsettings/log

....
DESKTOP: cinnamon-wayland-wayland (which looks a bit redundant w/ wayland listed twice)
GUESS_DESKTOP: $XDG_SESSION_TYPE
```

So there's two issues here:
1. I think imsettings (which is X11-orientated) should probably be ignoring cinnamon-wayland altogether which means adding this entry to none.conf

ie
/etc/X11/xinit/xinput.d/none.conf
....
IMSETTINGS_IGNORE_SESSION=GNOME,GNOME-wayland,KDE-wayland,cinnamon-wayland-wayland

2. Why is the value of DESKTOP cinnamon-wayland-wayland and not just cinnamon-wayland?

Here are the XDG-related variables and associated values from a cinnamon wayland session.

env | grep XDG
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SEAT=seat0
XDG_SESSION_DESKTOP=cinnamon-wayland
XDG_SESSION_TYPE=wayland
....

My guess is that imsettings is combining XDG_SESSION_DESKTOP with XDG_SESSION_TYPE to form cinnamon-wayland-wayland -- but I'm not sure. 

I'm basically looking for 
1. clarification on whether cinnamon wayland should be ignored by imsettings
2. whether or not the DESKTOP value should resolve to cinnamon-wayland-wayland vs just cinnamon-wayland.

Thanks

Reproducible: Always

Steps to Reproduce:
Install cinnamon 6.0 from the Fedora rawhide repo. 
Login to a cinnamon rawhide session