Revert out-of-scope sprite.ts regeneration from d971696f that dropped
two unrelated dead icons (arrow-left-long, sort-desc); those belong in
a separate dead-code cleanup if desired. Add a comment at the
DesktopWindowControlsStyle type noting control width is style-dependent
(classic vs traffic-lights), so no fixed-width constant applies.
Pablo Gonzalez
8c7fec2356