The swipe-action share sheet, the expanded player's safe area and the
Dynamic Island side check took connectedScenes.first, which ignores
which scene is active (on the iPhone Duo it can be the other panel's)
and presented the share sheet from the main window, behind an expanded
player.
UIApplication.foregroundWindowScene/foregroundWindow resolve the
foreground-active scene (else foreground-inactive, else any) and its
key window, the order the widescreen layout already used. The share
sheet now presents from the key window, which is the player's while it
is up. The tvOS display mode manager uses the same lookup.
Each video row carried its own sheets: tappableVideo added the queue
action and resume sheets, the context menu and swipe actions added
add-to-playlist and download options, so a row could declare up to six
sheets, owned by a row that a list may recycle.
Rows now present those through the nearest sheet host, as does the
video info view's resume prompt. The queue action sheet for a tapped
description link becomes a global request instead of being declared
at both the app root and the expanded player.
Sheets take the color scheme where their host sits, so the floating
details panel's dark override no longer reaches them and the
presentationColorScheme workaround is gone.
When enabled (the default), share links to YouTube videos point to the
active source's web watch page instead of youtube.com. Invidious serves
its frontend at the API URL; Piped uses its configured frontend URL.
Videos the active source can't serve (PeerTube, extracted sources) and
sources without a web frontend keep their original links.
The toggle lives in Settings > Layout & Navigation > Sharing on iOS and
macOS, and is shown only when an enabled source has a web watch page.
UIActivityViewController is presented as a popover on iPad and requires an
anchor; without a sourceView/barButtonItem UIKit aborts in
-[UIPopoverPresentationController presentationTransitionWillBegin]. Set
sourceView/sourceRect on both the direct presentation in the swipe-actions
modifier and the ShareSheet representable.
Fixes a SIGABRT seen in TestFlight build 261.
