ios: fix sheets dismissing during biometric authentication

apps/ios/Shared/ContentView.swift

@@ -13,6 +13,7 @@ struct ContentView: View {
     @EnvironmentObject var chatModel: ChatModel
     @ObservedObject var alertManager = AlertManager.shared
     @ObservedObject var callController = CallController.shared
+    @ObservedObject var appSheetState = AppSheetState.shared
     @Environment(\.colorScheme) var colorScheme
     @EnvironmentObject var theme: AppTheme
     @EnvironmentObject var sceneDelegate: SceneDelegate
@@ -250,7 +251,8 @@ struct ContentView: View {
 
     private func mainView() -> some View {
         ZStack(alignment: .top) {
-            ChatListView(activeUserPickerSheet: $chatListUserPickerSheet).privacySensitive(protectScreen)
+            ChatListView(activeUserPickerSheet: $chatListUserPickerSheet)
+                .redacted(reason: appSheetState.redactionReasons(protectScreen))
             .onAppear {
                 requestNtfAuthorization()
                 // Local Authentication notice is to be shown on next start after onboarding is complete

apps/ios/Shared/Views/Helpers/AppSheet.swift

@@ -10,7 +10,14 @@ import SwiftUI
 
 class AppSheetState: ObservableObject {
     static let shared = AppSheetState()
+    @Published var biometricAuth: Bool = false
     @Published var scenePhaseActive: Bool = false
+
+    func redactionReasons(_ protectScreen: Bool) -> RedactionReasons {
+        !protectScreen || scenePhaseActive || biometricAuth
+        ? RedactionReasons()
+        : RedactionReasons.placeholder
+    }
 }
 
 private struct PrivacySensitive: ViewModifier {
@@ -19,11 +26,7 @@ private struct PrivacySensitive: ViewModifier {
     @ObservedObject var appSheetState: AppSheetState = AppSheetState.shared
 
     func body(content: Content) -> some View {
-        if !protectScreen {
-            content
-        } else {
-            content.privacySensitive(!appSheetState.scenePhaseActive).redacted(reason: .privacy)
-        }
+        content.redacted(reason: appSheetState.redactionReasons(protectScreen))
     }
 }
 

apps/ios/Shared/Views/Helpers/LocalAuthenticationUtils.swift

@@ -63,9 +63,11 @@ func systemAuthenticate(_ reason: String, _ completed: @escaping (LAResult) -> V
     var authAvailabilityError: NSError?
     if laContext.canEvaluatePolicy(.deviceOwnerAuthentication, error: &authAvailabilityError) {
         logger.debug("DEBUGGING: systemAuthenticate: canEvaluatePolicy callback")
+        AppSheetState.shared.biometricAuth = true
         laContext.evaluatePolicy(.deviceOwnerAuthentication, localizedReason: reason) { success, authError in
             logger.debug("DEBUGGING: systemAuthenticate evaluatePolicy callback")
             DispatchQueue.main.async {
+                AppSheetState.shared.biometricAuth = false
                 if success {
                     completed(LAResult.success)
                 } else {