iOS: accept images in NSE if enabled, reorder chats when coming from background (#800)

* ios: automatically accept images in NSE, if enabled in settings

* remove unnecessary TODOs

* reorder chat when coming from background

apps/ios/Shared/Views/UserSettings/PrivacySettings.swift

@@ -7,6 +7,7 @@
 //
 
 import SwiftUI
+import SimpleXChat
 
 struct PrivacySettings: View {
     @AppStorage(DEFAULT_PRIVACY_ACCEPT_IMAGES) private var autoAcceptImages = true
@@ -21,6 +22,7 @@ struct PrivacySettings: View {
                 Section("Chats") {
                     settingsRow("photo") {
                         Toggle("Auto-accept images", isOn: $autoAcceptImages)
+                            .onChange(of: autoAcceptImages) { privacyAcceptImagesGroupDefault.set($0) }
                     }
                     settingsRow("network") {
                         Toggle("Send link previews", isOn: $useLinkPreviews)

apps/ios/Shared/Views/UserSettings/SettingsView.swift

@@ -43,6 +43,10 @@ private var indent: CGFloat = 36
 
 let chatArchiveTimeDefault = DateDefault(defaults: UserDefaults.standard, forKey: DEFAULT_CHAT_ARCHIVE_TIME)
 
+func setGroupDefaults() {
+    privacyAcceptImagesGroupDefault.set(UserDefaults.standard.bool(forKey: DEFAULT_PRIVACY_ACCEPT_IMAGES))
+}
+
 struct SettingsView: View {
     @Environment(\.colorScheme) var colorScheme
     @EnvironmentObject var chatModel: ChatModel