Add dividing border to loading state.

app/assets/stylesheets/pages/merge_requests.scss

@@ -429,11 +429,11 @@
   }
 }
 
+#merge-request-widget-app .loading,
 .approvals-components {
   border-top: 1px solid $well-inner-border;
 }
 
-
 .approvals-body {
   @media (max-width: $screen-xs-max) {
     text-align: center;