Use super parameters in templates (flutter#101157)

packages/flutter_tools/templates/app/lib/main.dart.tmpl

@@ -17,7 +17,7 @@ void main() {
 
 {{^withPluginHook}}
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   // This widget is the root of your application.
   @override
@@ -42,7 +42,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
 
   // This widget is the home page of your application. It is stateful, meaning
   // that it has a State object (defined below) that contains fields that affect
@@ -128,7 +128,7 @@ class _MyHomePageState extends State<MyHomePage> {
 {{/withPluginHook}}
 {{#withPlatformChannelPluginHook}}
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();
@@ -183,7 +183,7 @@ class _MyAppState extends State<MyApp> {
 {{/withPlatformChannelPluginHook}}
 {{#withFfiPluginHook}}
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   _MyAppState createState() => _MyAppState();

packages/flutter_tools/templates/module/common/lib/main.dart.tmpl

@@ -10,7 +10,7 @@ void main() => runApp(const MyApp());
 
 {{^withPlatformChannelPluginHook}}
 class MyApp extends StatelessWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   // This widget is the root of your application.
   @override
@@ -34,7 +34,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({Key? key, required this.title}) : super(key: key);
+  const MyHomePage({super.key, required this.title});
 
   // This widget is the home page of your application. It is stateful, meaning
   // that it has a State object (defined below) that contains fields that affect
@@ -120,7 +120,7 @@ class _MyHomePageState extends State<MyHomePage> {
 {{/withPlatformChannelPluginHook}}
 {{#withPlatformChannelPluginHook}}
 class MyApp extends StatefulWidget {
-  const MyApp({Key? key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   State<MyApp> createState() => _MyAppState();

packages/flutter_tools/templates/skeleton/lib/src/app.dart.tmpl

@@ -10,9 +10,9 @@ import 'settings/settings_view.dart';
 /// The Widget that configures your application.
 class MyApp extends StatelessWidget {
   const MyApp({
-    Key? key,
+    super.key,
     required this.settingsController,
-  }) : super(key: key);
+  });
 
   final SettingsController settingsController;
 

packages/flutter_tools/templates/skeleton/lib/src/sample_feature/sample_item_details_view.dart.tmpl

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 
 /// Displays detailed information about a SampleItem.
 class SampleItemDetailsView extends StatelessWidget {
-  const SampleItemDetailsView({Key? key}) : super(key: key);
+  const SampleItemDetailsView({super.key});
 
   static const routeName = '/sample_item';
 

packages/flutter_tools/templates/skeleton/lib/src/sample_feature/sample_item_list_view.dart.tmpl

@@ -7,9 +7,9 @@ import 'sample_item_details_view.dart';
 /// Displays a list of SampleItems.
 class SampleItemListView extends StatelessWidget {
   const SampleItemListView({
-    Key? key,
+    super.key,
     this.items = const [SampleItem(1), SampleItem(2), SampleItem(3)],
-  }) : super(key: key);
+  });
 
   static const routeName = '/';
 

packages/flutter_tools/templates/skeleton/lib/src/settings/settings_view.dart.tmpl

@@ -7,7 +7,7 @@ import 'settings_controller.dart';
 /// When a user changes a setting, the SettingsController is updated and
 /// Widgets that listen to the SettingsController are rebuilt.
 class SettingsView extends StatelessWidget {
-  const SettingsView({Key? key, required this.controller}) : super(key: key);
+  const SettingsView({super.key, required this.controller});
 
   static const routeName = '/settings';