TF-4367 Add E2E test for test case forward email is forwarded when change language on mobile

integration_test/tests/email_detailed/forward_email_forwarded_when_change_language_test.dart

@@ -0,0 +1,10 @@
+import '../../base/test_base.dart';
+import '../../scenarios/email_detailed/forward_email_forwarded_when_change_language_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description:
+        'The subject line of an email should not be changed when forwarding to an email that has already been forwarded to.',
+    scenarioBuilder: ($) => ForwardEmailForwardedWhenChangeLanguageScenario($),
+  );
+}