update cache for flutter test/fast command (#51235)

packages/flutter_tools/lib/src/commands/test.dart

@@ -23,7 +23,7 @@ import '../test/runner.dart';
 import '../test/test_wrapper.dart';
 import '../test/watcher.dart';
 
-class TestCommand extends FastFlutterCommand {
+class TestCommand extends FlutterCommand {
   TestCommand({
     bool verboseHelp = false,
     this.testWrapper = const TestWrapper(),

packages/flutter_tools/lib/src/runner/flutter_command.dart

@@ -881,15 +881,3 @@ DevelopmentArtifact _artifactFromTargetPlatform(TargetPlatform targetPlatform) {
   }
   return null;
 }
-
-/// A command which runs less analytics and checks to speed up startup time.
-abstract class FastFlutterCommand extends FlutterCommand {
-  @override
-  Future<void> run() {
-    return context.run<void>(
-      name: 'command',
-      overrides: <Type, Generator>{FlutterCommand: () => this},
-      body: runCommand,
-    );
-  }
-}

packages/flutter_tools/test/commands.shard/hermetic/test_test.dart

@@ -27,6 +27,7 @@ void main() {
   setUp(() {
     fs = MemoryFileSystem();
     fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
     fs.directory('test').childFile('some_test.dart').createSync(recursive: true);
   });