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/Settings/EditSourceView.swift

@@ -334,6 +334,7 @@ private struct EditRemoteServerContent: View {
             }
             Button(String(localized: "common.cancel"), role: .cancel) {}
         }
+        .presentationCompactAdaptation(.sheet)
         .sheet(isPresented: $showLoginSheet) {
             InstanceLoginView(instance: instance) { credential in
                 appEnvironment?.credentialsManager(for: instance)?.setCredential(credential, for: instance)
@@ -366,6 +367,7 @@ private struct EditRemoteServerContent: View {
         } message: {
             Text(String(localized: "sources.yatteeServer.warning.message"))
         }
+        .presentationCompactAdaptation(.sheet)
     }
 
     // MARK: - Computed Properties
@@ -733,6 +735,7 @@ private struct EditFileSourceContent: View {
             }
             Button(String(localized: "common.cancel"), role: .cancel) {}
         }
+        .presentationCompactAdaptation(.sheet)
     }
 
     @ViewBuilder