Update settings on wacom-* pages
The Test Your Settings button opens a "sketchpad" for testing.
I'm testing with an Intuos BT S with buttons along the top. Presumably left-handed/right-handed controls are still applicable for models with Express KeysTM.
The note, "If no tablet is detected, you’ll be asked to Please plug in or turn on your Wacom tablet. Click the Bluetooth Settings link to connect a wireless tablet" may no longer be valid. If the tablet is not detected, the panel does not appear.
I'm testing with GNOME 41.2 because 42 beta in Boxes flatpak has no way of communicating with the tablet. The design mockups show everything in one scrollable panel rather than two selected with top bar buttons.
Everything else looks okay.