Migrate testing_app to UIScene lifecycle (#2836)

## Summary
[![talabat.com
contributions](https://img.shields.io/badge/talabat.com-contributions-FF5A00?style=flat&logo=flutter&logoColor=white)](https://www.talabat.com)
[![Talabat Flutter
PRs](https://img.shields.io/badge/Talabat_Flutter_PRs-26%20merged-97ca00?style=flat&logo=flutter&logoColor=white)](https://github.com/search?q=org%3Aflutter+talabat&type=pullrequests)

- Migrate `testing_app` iOS project to the UIScene lifecycle as per the
[migration
guide](https://docs.flutter.dev/release/breaking-changes/uiscenedelegate)
- Update `AppDelegate.swift` to use `@main`,
`FlutterImplicitEngineDelegate`, and move plugin registration to
`didInitializeImplicitFlutterEngine`
- Add `UIApplicationSceneManifest` to `Info.plist`

Part of flutter/flutter#176957

## Test plan
- [x] Ran `testing_app` on iOS simulator — app launches and works
correctly

---------

Co-authored-by: Eric Windmill <eric@ericwindmill.com>

compass_app/app/lib/routing/router.dart

@@ -14,7 +14,8 @@ import '../ui/auth/login/widgets/login_screen.dart';
 import '../ui/auth/logout/view_models/logout_viewmodel.dart';
 import '../ui/booking/view_models/booking_viewmodel.dart';
 import '../ui/booking/widgets/booking_screen.dart';
-import '../ui/home/widgets/home_screen_container.dart';
+import '../ui/home/view_models/home_viewmodel.dart';
+import '../ui/home/widgets/home_screen.dart';
 import '../ui/results/view_models/results_viewmodel.dart';
 import '../ui/results/widgets/results_screen.dart';
 import '../ui/search_form/view_models/search_form_viewmodel.dart';

pedometer/lib/pedometer_bindings_generated.dart

@@ -45993,9 +45993,7 @@ class ObjCBlock_ffiVoid_ObjCObject_ffiUnsignedLong_bool extends _ObjCBlockBase {
                       ffi.UnsignedLong,
                       ffi.Pointer<ffi.Bool>,
                     )
-                  >(
+                  >(_ObjCBlock_ffiVoid_ObjCObject_ffiUnsignedLong_bool_closureTrampoline)
-                    _ObjCBlock_ffiVoid_ObjCObject_ffiUnsignedLong_bool_closureTrampoline,
-                  )
                   .cast(),
           _ObjCBlock_ffiVoid_ObjCObject_ffiUnsignedLong_bool_registerClosure(
             (

pubspec.yaml

@@ -50,8 +50,8 @@ skip_ci:
   - add_to_app/multiple_flutters/multiple_flutters_module
   - add_to_app/plugin/flutter_module_using_plugin
   - add_to_app/prebuilt_module/flutter_module
-  # remove after 3.44 release
   - cupertino_gallery
 
 skip_ci_beta:
-  - material_3_demo
+  # - sample_name_to_skip
+

testing_app/ios/Runner/AppDelegate.swift

@@ -1,13 +1,16 @@
-import UIKit
 import Flutter
+import UIKit
 
-@UIApplicationMain
+@main
-@objc class AppDelegate: FlutterAppDelegate {
+@objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {
   override func application(
     _ application: UIApplication,
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
-    GeneratedPluginRegistrant.register(with: self)
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
+
+  func didInitializeImplicitFlutterEngine(_ engineBridge: FlutterImplicitEngineBridge) {
+    GeneratedPluginRegistrant.register(with: engineBridge.pluginRegistry)
+  }
 }

testing_app/ios/Runner/Info.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleDisplayName</key>
@@ -24,6 +26,29 @@
 	<string>$(FLUTTER_BUILD_NUMBER)</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneClassName</key>
+					<string>UIWindowScene</string>
+					<key>UISceneConfigurationName</key>
+					<string>flutter</string>
+					<key>UISceneDelegateClassName</key>
+					<string>FlutterSceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIMainStoryboardFile</key>
@@ -43,9 +68,5 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
-	<key>CADisableMinimumFrameDurationOnPhone</key>
-	<true/>
-	<key>UIApplicationSupportsIndirectInputEvents</key>
-	<true/>
 </dict>
 </plist>