feat(flutter): 统一文字下拉刷新

lib/l10n/app_localizations_en.dart

@@ -676,6 +676,15 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get retry => 'Retry';
 
+  @override
+  String get pullToRefresh => 'Pull to refresh';
+
+  @override
+  String get releaseToRefresh => 'Release to refresh';
+
+  @override
+  String get refreshingLabel => 'Refreshing…';
+
   @override
   String get backToSeries => 'Back to series';