Use legacy tab shown event for product locale editors

app/assets/javascripts/rails_admin/custom/ui.js

@@ -134,8 +134,7 @@
     $tabs.append($header).append($nav).append($content);
     $mount.replaceWith($tabs);
 
-    ensurePaneEditors($content.find('.product-locale-pane.active'));
-    $nav.on('shown.bs.tab', 'a[data-toggle="tab"]', function() {
+    $nav.on('shown shown.bs.tab', 'a[data-toggle="tab"]', function() {
       var selector = $(this).attr('href');
       if (!selector) {
         return;