Cherry pick commit fix issue #4292 to master (#4454)

* Add folder info when open mail list from Label

(cherry picked from commit de0bb4ee02030ca90126766a8713a6826d791acd)

* Add unit test for `hasMailboxLabel` function in BaseEmailItemTile mixin

(cherry picked from commit 18f8d1847acccd6f95006b93903f0caa6c0408df)

* TF-4292 Add E2E test for test case `Add folder info when open mail list from Label` on mobile

(cherry picked from commit 1c209e333510db161522e4449ad7fb2e5d28399f)

integration_test/tests/labels/display_folder_info_when_open_mail_from_tag_test.dart

@@ -0,0 +1,9 @@
+import '../../base/test_base.dart';
+import '../../scenarios/labels/display_folder_info_when_open_mail_from_tag_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description: 'Should display folder info when open mail list from tag',
+    scenarioBuilder: ($) => DisplayFolderInfoWhenOpenMailFromTagScenario($),
+  );
+}