TF-3712 Update chosen language to server settings

lib/features/manage_account/domain/state/save_language_to_server_settings_state.dart

@@ -0,0 +1,18 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:flutter/widgets.dart';
+
+class SavingLanguageToServerSettings extends LoadingState {}
+
+class SaveLanguageToServerSettingsSuccess extends UIState {
+  SaveLanguageToServerSettingsSuccess(this.locale);
+
+  final Locale locale;
+
+  @override
+  List<Object?> get props => [locale];
+}
+
+class SaveLanguageToServerSettingsFailure extends FeatureFailure {
+  SaveLanguageToServerSettingsFailure({super.exception});
+}