sort directives (#81210)

dev/devicelab/bin/tasks/dart_plugin_registry_test.dart

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter_devicelab/tasks/dart_plugin_registry_tests.dart';
 import 'package:flutter_devicelab/framework/framework.dart';
+import 'package:flutter_devicelab/tasks/dart_plugin_registry_tests.dart';
 
 Future<void> main() async {
   await task(dartPluginRegistryTest());

dev/devicelab/lib/tasks/dart_plugin_registry_tests.dart

@@ -6,10 +6,10 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:path/path.dart' as path;
 import 'package:flutter_devicelab/framework/framework.dart';
 import 'package:flutter_devicelab/framework/task_result.dart';
 import 'package:flutter_devicelab/framework/utils.dart';
+import 'package:path/path.dart' as path;
 
 TaskFunction dartPluginRegistryTest({
   String deviceIdOverride,