Update to avoid deprecated library

diff --git a/packages/file_selector/file_selector_web/example/integration_test/dom_helper_test.dart b/packages/file_selector/file_selector_web/example/integration_test/dom_helper_test.dart
index 1cec6fc..742e9e3 100644
--- a/packages/file_selector/file_selector_web/example/integration_test/dom_helper_test.dart
+++ b/packages/file_selector/file_selector_web/example/integration_test/dom_helper_test.dart

@@ -8,7 +8,7 @@
 import 'package:file_selector_web/src/dom_helper.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
-import 'package:web/helpers.dart';
+import 'package:web/web.dart';
 
 void main() {
   group('dom_helper', () {

diff --git a/packages/file_selector/file_selector_web/example/integration_test/file_selector_web_test.dart b/packages/file_selector/file_selector_web/example/integration_test/file_selector_web_test.dart
index f3d4c1e..80376c5 100644
--- a/packages/file_selector/file_selector_web/example/integration_test/file_selector_web_test.dart
+++ b/packages/file_selector/file_selector_web/example/integration_test/file_selector_web_test.dart

@@ -9,7 +9,7 @@
 import 'package:file_selector_web/src/dom_helper.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
-import 'package:web/helpers.dart';
+import 'package:web/web.dart';
 
 void main() {
   group('FileSelectorWeb', () {

diff --git a/packages/shared_preferences/shared_preferences_web/example/integration_test/shared_preferences_web_test.dart b/packages/shared_preferences/shared_preferences_web/example/integration_test/shared_preferences_web_test.dart
index 9f0faae..c87bcc4 100644
--- a/packages/shared_preferences/shared_preferences_web/example/integration_test/shared_preferences_web_test.dart
+++ b/packages/shared_preferences/shared_preferences_web/example/integration_test/shared_preferences_web_test.dart

@@ -10,7 +10,7 @@
 import 'package:shared_preferences_web/shared_preferences_web.dart';
 import 'package:shared_preferences_web/src/keys_extension.dart';
 
-import 'package:web/helpers.dart' as html;
+import 'package:web/web.dart' as html;
 
 void main() {
   IntegrationTestWidgetsFlutterBinding.ensureInitialized();

diff --git a/packages/url_launcher/url_launcher_web/example/integration_test/link_widget_test.dart b/packages/url_launcher/url_launcher_web/example/integration_test/link_widget_test.dart
index 528cff3..854e368 100644
--- a/packages/url_launcher/url_launcher_web/example/integration_test/link_widget_test.dart
+++ b/packages/url_launcher/url_launcher_web/example/integration_test/link_widget_test.dart

@@ -10,7 +10,7 @@
 import 'package:integration_test/integration_test.dart';
 import 'package:url_launcher_platform_interface/link.dart';
 import 'package:url_launcher_web/src/link.dart';
-import 'package:web/helpers.dart' as html;
+import 'package:web/web.dart' as html;
 
 void main() {
   IntegrationTestWidgetsFlutterBinding.ensureInitialized();

diff --git a/packages/url_launcher/url_launcher_web/example/integration_test/url_launcher_web_test.dart b/packages/url_launcher/url_launcher_web/example/integration_test/url_launcher_web_test.dart
index ec01d28..2dcdd2d 100644
--- a/packages/url_launcher/url_launcher_web/example/integration_test/url_launcher_web_test.dart
+++ b/packages/url_launcher/url_launcher_web/example/integration_test/url_launcher_web_test.dart

@@ -10,7 +10,7 @@
 import 'package:mockito/mockito.dart' show Mock, any, verify, when;
 import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';
 import 'package:url_launcher_web/url_launcher_web.dart';
-import 'package:web/helpers.dart' as html;
+import 'package:web/web.dart' as html;
 
 abstract class MyWindow {
   html.Window? open(Object? a, Object? b, Object? c);