Different document type entries couldn't be created due to a JS error in ddm_form.js

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.1.0 Beta 2, 7.1.X, Master
• Component/s: Dynamic Data Mapping
• Labels:
  • forms_mission_6
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/58922

To reproduce:
1. navigate to Content > Documents and Media
2. click on add button and select new Contract

Actual result:
Fields are disabled, JS error on console:
Unable to get property 'label' of undefined or null reference
ddm_form.js

Expected:
To be able to create documents other than Basic Document

Tested on master 230f42b