[Rspamd][Web] Internal alias support

data/web/js/site/mailbox.js

@@ -1972,6 +1972,15 @@ jQuery(function($){
           data: 'private_comment',
           defaultContent: ''
         },
+        {
+          title: lang.internal,
+          data: 'internal',
+          defaultContent: '',
+          responsivePriority: 6,
+          render: function (data, type) {
+            return 1==data?'<i class="bi bi-check-lg"><span class="sorting-value">1</span></i>':0==data&&'<i class="bi bi-x-lg"><span class="sorting-value">0</span></i>';
+          }
+        },
         {
           title: lang.active,
           data: 'active',