Fix A11y tests (#5104)

* replace NavigationStack with ElementNavigationStack to allow the content to be rendered without a NavigationStack in a11y tests

* fix a11y tests

* update xcodeproject

* swiftformat fix

* use iOS 26.1 for CI

* use a wrapper to solve the issue for a11y tests

* ElementNavigationStack only uses the trick in DEBUG mode, and added a swiftlint rule to prevent the usage of NavigationStack

ElementX/Sources/Screens/EditRoomAddressScreen/View/EditRoomAddressScreen.swift

@@ -86,17 +86,17 @@ struct EditRoomAddressScreen_Previews: PreviewProvider, TestablePreview {
     }()
     
     static var previews: some View {
-        NavigationStack {
+        ElementNavigationStack {
             EditRoomAddressScreen(context: noAliasviewModel.context)
         }
         .previewDisplayName("No alias")
         
-        NavigationStack {
+        ElementNavigationStack {
             EditRoomAddressScreen(context: aliasviewModel.context)
         }
         .previewDisplayName("With alias")
         
-        NavigationStack {
+        ElementNavigationStack {
             EditRoomAddressScreen(context: invalidSymbolsViewModel.context)
         }
         .snapshotPreferences(expect: invalidSymbolsViewModel.context.$viewState.map { state in
@@ -104,7 +104,7 @@ struct EditRoomAddressScreen_Previews: PreviewProvider, TestablePreview {
         })
         .previewDisplayName("Invalid symbols")
         
-        NavigationStack {
+        ElementNavigationStack {
             EditRoomAddressScreen(context: alreadyExistingViewModel.context)
         }
         .snapshotPreferences(expect: alreadyExistingViewModel.context.$viewState.map { state in