Fix using previous presentation mode value which leads to incorrect state when presenting ChatChannelView using UIKit in iOS 26.1

Author: laevandus

Sources/StreamChatSwiftUI/ChatChannel/ChatChannelView.swift

@@ -183,8 +183,8 @@ public struct ChatChannelView<Factory: ViewFactory>: View, KeyboardReadable {
             viewModel.reactionsShown = false
             messageDisplayInfo = nil
         }
-        .onChange(of: presentationMode.wrappedValue, perform: { newValue in
-            if newValue.isPresented == false {
+        .onChange(of: presentationMode.wrappedValue, perform: { _ in
+            if presentationMode.wrappedValue.isPresented == false {
                 viewModel.onViewDissappear()
             } else {
                 viewModel.setActive()