Between Emacs 28.0.50.145785 and Emacs 28.0.50.146000, a commit broke my
face config, and inheriting from `fixed-pitch' no longer made my faces
fixed-pitched. This commit therefore sets directly the font of the faces
than need to be fixed-pitched instead of relying on the `fixed-pitch'
face.
Lucien Cartier-Tilet
fcc16e8f98
