ios: Testing workaround of a crash (#1789)

* ios: Testing workaround of a crash

* another try

* complete

* added file

* enable swipe to go back from ChatView

* Revert "enable swipe to go back from ChatView"

This reverts commit 22de79505c.

* refactor

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

apps/ios/Shared/Views/Chat/ChatView.swift

@@ -15,6 +15,7 @@ private let memberImageSize: CGFloat = 34
 struct ChatView: View {
     @EnvironmentObject var chatModel: ChatModel
     @Environment(\.colorScheme) var colorScheme
+    @Environment(\.dismiss) var dismiss
     @State @ObservedObject var chat: Chat
     @State private var showChatInfoSheet: Bool = false
     @State private var showAddMembersSheet: Bool = false
@@ -70,6 +71,9 @@ struct ChatView: View {
                 }
             }
         }
+         .onChange(of: chatModel.chatId) { _ in
+             if chatModel.chatId == nil { dismiss() }
+         }
         .toolbar {
             ToolbarItem(placement: .navigationBarLeading) {
                 Button {