TF-868: Unread/new emails are not loaded when opening folder

lib/features/thread/data/local/email_cache_manager.dart

@@ -1,5 +1,5 @@
-
 import 'package:core/core.dart';
+import 'package:jmap_dart_client/jmap/core/unsigned_int.dart';
 import 'package:model/model.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
@@ -21,6 +21,7 @@ class EmailCacheManager {
   Future<List<Email>> getAllEmail({
     MailboxId? inMailboxId,
     Set<Comparator>? sort,
+    UnsignedInt? limit,
     FilterMessageOption filterOption = FilterMessageOption.all
   }) async {
     final emailCacheList = inMailboxId != null
@@ -35,6 +36,10 @@ class EmailCacheManager {
         emailList.sortBy(comparator);
       }
     }
+
+    if (limit != null && emailList.length > limit.value.toInt()) {
+      return emailList.getRange(0, limit.value.toInt()).toList();
+    }
     return emailList;
   }