Also swap the icon to puzzlepiece.extension, which better conveys that
this section houses third-party service hookups (SponsorBlock, Return
YouTube Dislike, DeArrow, short-link resolution) rather than being
YouTube-specific.
Hide the Resolve Short Links toggle on tvOS — there's no way to tap
inline description links or reach a system browser there — and tighten
the openInSystemBrowser platform guards so the iOS-only UIApplication
path isn't compiled on tvOS.