settings: Improve listbox styles
Initially I only wanted to add a small border radius to the WifiStatusPage
s listbox rows but then noticed that some bit of the audio device selection (which uses the same style class) were only working by accident. Let's fix that up and also adjust the focus style to match that of the buttons (blue border instead of dotted line):
This should help upcoming quick settings status pages list boxes too as they will use the same style class.