Fix 5 TestFlight crash types from builds 250-254

- Fix BGTaskScheduler assertion crash on Mac Catalyst by guarding all
  iOS background task APIs with isMacCatalystApp check
- Fix iPad popover crash in UIPopoverPresentationController by adding
  .presentationCompactAdaptation(.sheet) to all 27 confirmationDialogs
- Fix SwiftData assertion crash when accessing deleted Bookmark model
  properties during SwiftUI hit testing in BookmarkRowView
- Fix UICollectionView invalid item count crash on queue swipe-to-delete
  by using ID-based removal with withAnimation instead of stale index
- Fix Range crash in storyboard download when storyboardCount is zero

Yattee/Views/Downloads/DownloadsStorageView.swift

@@ -87,6 +87,7 @@ struct DownloadsStorageView: View {
         } message: {
             Text("settings.downloads.storage.deleteWatched.message \(watchedDownloads.count) \(formatBytes(watchedDownloadsSize))")
         }
+        .presentationCompactAdaptation(.sheet)
         .confirmationDialog(
             String(localized: "settings.downloads.storage.deleteAll"),
             isPresented: $showingDeleteAllConfirmation,
@@ -101,6 +102,7 @@ struct DownloadsStorageView: View {
         } message: {
             Text("settings.downloads.storage.deleteAll.message \(completedDownloads.count) \(formatBytes(allDownloadsSize))")
         }
+        .presentationCompactAdaptation(.sheet)
     }
 
     // MARK: - Delete Menu