Upgrade the project to use Xcode 15.4 (#3027)

* Update snapshots for Xcode 15.4

* Update CI.

* Fix crashing UI test.

* Fix compile error in Integration Tests.

* Try putting UI tests on GH runners again.

ElementX/Sources/Screens/CreateRoom/View/CreateRoomScreen.swift

@@ -197,11 +197,11 @@ struct CreateRoom_Previews: PreviewProvider, TestablePreview {
     }()
     
     static var previews: some View {
-        NavigationView {
+        NavigationStack {
             CreateRoomScreen(context: viewModel.context)
         }
         .previewDisplayName("Create Room")
-        NavigationView {
+        NavigationStack {
             CreateRoomScreen(context: emtpyViewModel.context)
         }
         .previewDisplayName("Create Room without users")

ElementX/Sources/Screens/EmojiPickerScreen/View/EmojiPickerScreen.swift

@@ -95,7 +95,14 @@ struct EmojiPickerScreen_Previews: PreviewProvider, TestablePreview {
     static var previews: some View {
         EmojiPickerScreen(context: viewModel.context, selectedEmojis: ["😀", "😄"])
             .previewDisplayName("Screen")
-        
+            .snapshot(delay: 0.5)
+    }
+}
+
+struct EmojiPickerScreenSheet_Previews: PreviewProvider {
+    static let viewModel = EmojiPickerScreenViewModel(emojiProvider: EmojiProvider())
+    
+    static var previews: some View {
         Text("Timeline view")
             .sheet(isPresented: .constant(true)) {
                 EmojiPickerScreen(context: viewModel.context, selectedEmojis: ["😀", "😄"])

ElementX/Sources/Screens/HomeScreen/View/Filters/RoomListFiltersEmptyStateView.swift

@@ -68,6 +68,7 @@ struct RoomListFiltersEmptyStateView_Previews: PreviewProvider, TestablePreview
             }
             RoomListFiltersEmptyStateView(state: .init(activeFilters: [.people, .favourites]))
         }
+        .padding(.bottom)
         .previewLayout(.sizeThatFits)
     }
 }

ElementX/Sources/Screens/InviteUsersScreen/View/InviteUsersScreen.swift

@@ -169,7 +169,7 @@ struct InviteUsersScreen_Previews: PreviewProvider, TestablePreview {
     }()
     
     static var previews: some View {
-        NavigationView {
+        NavigationStack {
             InviteUsersScreen(context: viewModel.context)
         }
     }

ElementX/Sources/Screens/StartChatScreen/View/StartChatScreen.swift

@@ -140,7 +140,7 @@ struct StartChatScreen_Previews: PreviewProvider, TestablePreview {
     }()
     
     static var previews: some View {
-        NavigationView {
+        NavigationStack {
             StartChatScreen(context: viewModel.context)
         }
     }