bug#53043: Dash To Dock 71 not working properly with Gnome Shell 41

[raid5atemyhomework]

Hello Guix World,

I recently upgraded, and on reboot found that the Gnome Shell extension Dash to 
Dock was no longer working properly.

Instead of displaying my favorite applications on the bottom dock, it only 
displays the "applications" icon.  Running applications are also not displayed.

I found a solution:

* In the Gnome activities search bar, look for "Extensions" and run it.
* Select the gear icon / settings for Dash to Dock.
* Select tab "Appearance".
* Enable "Use built-in theme".

It seems the details of the theming engine were changed in recent Gnome and you 
now have no choice but "Use built-in theme".

Thanks
raid5atemyhomework