Name of folder contains _script_ text in dialog can not be displayed when copying/cutting

Description

Steps to reproduce:

1. Open Alloy site > go to Media gagdet
2. Create a folder with name contains <script>, for e.g: <script>test</script> under For All Sites
3. Copy/Cut this folder then paste it under For All Sites
4. Observer result

Expected: A dialog displays like The Content Folder "<script>test</script>" already exists.
Actual: A dialog is displayed with empty name of folder (see screenshot)