Add button is displayed on live site at Knowledge Base

• 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: Knowledge Base widget, Staging
• Labels: None
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/58875

To reproduce:
1. enable local staging for a site for all contents
2. navigate to live
3. navigate to Content > Knowledge Base

Actual result:
Add button is displayed on live

Expected:
No add button to be displayed on live

Tested on master ea29731