test: align beta2 integration checks

ui/flutter/test/updater_test.dart

@@ -194,7 +194,7 @@ void main() {
     expect(find.text('Faster downloads'), findsOneWidget);
     expect(find.text('下载更快'), findsNothing);
     expect(find.text('Later'), findsOneWidget);
-    expect(find.text('Update Now'), findsOneWidget);
+    expect(find.text('Update'), findsOneWidget);
     expect(find.text("What's New"), findsNothing);
     final versionText = tester.widget<Text>(find.text('2.0.0-beta.1  →  2.0.0-beta.2'));
     expect(versionText.style?.decoration, TextDecoration.none);

ui/flutter/test/widget_test.dart

@@ -2651,7 +2651,7 @@ void main() {
     await tester.tap(find.byKey(const ValueKey('settings-language-select')));
     await tester.pumpAndSettle();
     expect(find.text('English'), findsOneWidget);
-    expect(SettingsLanguageSelect.supportedValues, hasLength(22));
+    expect(SettingsLanguageSelect.supportedValues, hasLength(23));
     expect(SettingsLanguageSelect.supportedValues, containsAll(<String>['az', 'zh', 'zh_TW', 'pt']));
     expect(SettingsLanguageSelect.supportedValues, isNot(contains('zh_CN')));
     expect(SettingsLanguageSelect.supportedValues, isNot(contains('pt_BR')));