Editing the language code of the custom language is not updating in the backend.

Editing the language code of the custom language is not updating in the backend.

Steps to reproduce the issue.

1. Create a custom sound language with language code xx and upload some voicefiles.
2. Click on edit button and update the language code to yy.
3. Goto cli /var/lib/asterisk/sounds folder and check, you can see both xx and yy folders present and the voicefiles are present in the xx folder and not in the yy folder.