Also for 13.1 - MUST - GO - ON - Disks :)

- Drop gnome-shell-no_clear_hint.patch: we found a better
workardound that even results in the loading of the background
image. The code is of course not fixed.
- Create /usr/share/gnome-shell/modes: by this, the erronous code
path is not being triggered, likely due to async calls happening
in the expected order. It even results in loading the branded
background image (and explains why users with gnome-shell-classic
installed never saw this). (forwarded request 204216 from RBrownCCB)