TF-369 Fix auto close email when download attachment in browser with small screen

lib/features/email/presentation/email_controller.dart

@@ -140,8 +140,6 @@ class EmailController extends BaseController {
           _moveToMailboxSuccess(success);
         } else if (success is MarkAsStarEmailSuccess) {
           _markAsEmailStarSuccess(success);
-        } else if (success is DownloadAttachmentForWebSuccess) {
-          _downloadAttachmentForWebSuccessAction(success);
         }
       });
   }
@@ -308,28 +306,25 @@ class EmailController extends BaseController {
     }
   }
 
-  void downloadAttachmentForWeb(Attachment attachment) {
-    _downloadAttachmentForWebAction(attachment);
+  void downloadAttachmentForWeb(BuildContext context, Attachment attachment) {
+    _downloadAttachmentForWebAction(context, attachment);
   }
 
-  void _downloadAttachmentForWebAction(Attachment attachment) async {
+  void _downloadAttachmentForWebAction(BuildContext context, Attachment attachment) async {
     final accountId = mailboxDashBoardController.accountId.value;
     if (accountId != null && mailboxDashBoardController.sessionCurrent != null) {
       final baseDownloadUrl = mailboxDashBoardController.sessionCurrent!.getDownloadUrl();
+      _appToast.showToast(AppLocalizations.of(context).your_download_has_started);
       consumeState(_downloadAttachmentForWebInteractor.execute(attachment, accountId, baseDownloadUrl));
     }
   }
 
   void _downloadAttachmentForWebFailureAction(Failure failure) {
-    if (failure is DownloadAttachmentForWebFailure) {
-      popBack();
+    if (failure is DownloadAttachmentForWebFailure && currentContext != null) {
+      _appToast.showErrorToast(AppLocalizations.of(currentContext!).attachment_download_failed);
     }
   }
 
-  void _downloadAttachmentForWebSuccessAction(Success success) async {
-    popBack();
-  }
-
   void moveToMailboxAction(PresentationEmail email) async {
     final currentMailbox = mailboxDashBoardController.selectedMailbox.value;
     final accountId = mailboxDashBoardController.accountId.value;

lib/features/email/presentation/email_view.dart

@@ -450,7 +450,7 @@ class EmailView extends GetView with UserSettingPopupMenuMixin {
                 ..onExpandAttachmentActionClick(() => emailController.toggleDisplayAttachmentsAction())
                 ..onDownloadAttachmentFileActionClick((attachment) {
                   if (kIsWeb) {
-                    emailController.downloadAttachmentForWeb(attachment);
+                    emailController.downloadAttachmentForWeb(context, attachment);
                   } else {
                     if (Platform.isAndroid) {
                       emailController.downloadAttachments(context, [attachment]);