TF-996: add previous / Next message of a mailbox on mobile/tablet

lib/features/thread/presentation/thread_controller.dart

@@ -99,7 +99,6 @@ class ThreadController extends BaseController {
   final MoveToMailboxInteractor _moveToMailboxInteractor;
   final CachingManager _cachingManager;
 
-  final emailList = <PresentationEmail>[].obs;
   final listEmailDrag = <PresentationEmail>[].obs;
 
   bool canLoadMore = true;
@@ -128,6 +127,8 @@ class ThreadController extends BaseController {
 
   SearchQuery? get searchQuery => searchController.searchEmailFilter.value.text;
 
+  RxList<PresentationEmail> get emailList => mailboxDashBoardController.emailList;
+
   ThreadController(
     this._getEmailsInMailboxInteractor,
     this._markAsMultipleEmailReadInteractor,