TF-3449 Display mark as important icon in email list

Signed-off-by: dab246 <tdvu@linagora.com>

lib/features/thread/domain/model/search_email.dart

@@ -34,6 +34,9 @@ class SearchEmail extends Email {
     super.headerUserAgent,
     super.headerMdn,
     super.headerCalendarEvent,
+    super.xPriorityHeader,
+    super.importanceHeader,
+    super.priorityHeader,
     super.sMimeStatusHeader,
     super.identityHeader,
     required this.searchSnippetSubject,
@@ -82,6 +85,9 @@ class SearchEmail extends Email {
       headerUserAgent: email.headerUserAgent,
       headerMdn: email.headerMdn,
       headerCalendarEvent: email.headerCalendarEvent,
+      xPriorityHeader: email.xPriorityHeader,
+      importanceHeader: email.importanceHeader,
+      priorityHeader: email.priorityHeader,
       sMimeStatusHeader: email.sMimeStatusHeader,
       identityHeader: email.identityHeader,
       searchSnippetSubject: searchSnippetSubject,