Mouse/Touchpad: "Test Settings" button isn't a floating button
Affected version
46.beta.2/gnome-control-center-45.2-1.fc39.x86_64
Description
In #2839 (comment 1968478), Allan suggested that the "Test Settings" could be a floating button at the bottom:
However, !2188 (merged) didn't make the button as floating widget. The button is now accessible after scrolling to the very bottom of the page; this makes the button way too hidden.