This PR fixes the inactive tab style to properly show the label using
the muted text color.
I went about fixing this in the most direct way possible, but the
solution leaves a lot to be desired, IMO. I plan to explore some ideas
on how we can improve the state of styling the tab content without
having the same styles repeated all over the place and subsequently
out-of-sync.
Release Notes:
- N/A
Marshall Bowers
Max Brunsfeld
Piotr Osiewicz
Antonio Scandurra