TF-1865: Modify sending email in composer when tap item and Long press item

(cherry picked from commit 5cfda1d92f38da9e5e4fab1413e6e52229a51639)

lib/features/email/domain/state/get_email_content_state.dart

@@ -5,7 +5,7 @@ import 'package:model/model.dart';
 class GetEmailContentLoading extends LoadingState {}
 
 class GetEmailContentSuccess extends UIState {
-  final List<EmailContent> emailContents;
+  final String emailContents;
   final List<EmailContent> emailContentsDisplayed;
   final List<Attachment> attachments;
   final Email? emailCurrent;