Issue Summary

After removing the custom domain configuration for the portal URL, all service desk project throws a message to agents & admins of the project:  "Admin has reverted your help center URL
Your admin either deactivated or removed the <domain-url> custom domain used by this help center. Customers will need to use the default URL <url>"

Steps to Reproduce

1. Customer domain for portal URL configuration removed for more than 30 days
2. Access any JSM project as agent or admin, gets the message: "Admin has reverted your help center URL
   Your admin either deactivated or removed the <domain-url> custom domain used by this help center. Customers will need to use the default URL <url>"
3. Click the cross icon to close the flag or click on "learn more on the flag" to dismiss the message.
4. The message pops up again after a week on the service desk projects.

Expected Results

Click the cross icon to close the flag or click on "learn more on the flag" should remove the message permanently for the user for all JSM projects.

Actual Results

The below message still comes up after some time of dismissing it:

"Admin has reverted your help center URL
Your admin either deactivated or removed the <domain-url> custom domain used by this help center. Customers will need to use the default URL <url>" 

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available