Update template name and file name to keep M3 as suffix

Author: QuncCccccc

packages/material_ui/lib/src/app_bar.dart

@@ -34,7 +34,7 @@ import 'tabs.dart';
 import 'text_theme.dart';
 import 'theme.dart';
 
-part 'generated/app_bar_m3_defaults.g.dart';
+part 'generated/app_bar_defaults_m3.g.dart';
 
 // Examples can assume:
 // late String _logoAsset;

…src/generated/app_bar_m3_defaults.g.dart …src/generated/app_bar_defaults_m3.g.dartpackages/material_ui/lib/src/generated/app_bar_m3_defaults.g.dart renamed to packages/material_ui/lib/src/generated/app_bar_defaults_m3.g.dart packages/material_ui/lib/src/generated/app_bar_m3_defaults.g.dart renamed to packages/material_ui/lib/src/generated/app_bar_defaults_m3.g.dart

@@ -21,5 +21,5 @@ Future<void> main(List<String> args) async {
   final ArgResults argResults = parser.parse(args);
   // TODO(elliette): Add token logger when verbose flag is used.
   final verbose = argResults['verbose'] as bool;
-  const AppBarTemplate().generateFile(verbose: verbose);
+  const AppBarTemplateM3().generateFile(verbose: verbose);
 }

packages/material_ui/tool/gen_defaults/bin/gen_defaults.dart

@@ -8,8 +8,8 @@ import '../data/app_bar_medium.dart';
 import '../data/app_bar_small.dart';
 import 'template.dart';
 
-class AppBarTemplate extends M3TokenTemplate {
-  const AppBarTemplate();
+class AppBarTemplateM3 extends TokenTemplateM3 {
+  const AppBarTemplateM3();
 
   @override
   String get name => 'App Bar';

packages/material_ui/tool/gen_defaults/templates/app_bar_template.dart

@@ -146,6 +146,8 @@ void main() {
           ),
         ),
       );
+    });
+
     test('AppBarTemplateM3 emits M3 AppBar defaults from app bar tokens', () {
       final String contents = const AppBarTemplateM3().generateContents('_AppBarDefaultsM3');
       expect(contents, contains('class _AppBarDefaultsM3 extends AppBarThemeData'));