Update inline form errors summary after form validation with AJAX

This is blocked by: #77245: Provide a common API for displaying JavaScript messages →

Problem
When form input is validated via an AJAX call, the result* is not reflected in the Inline Form Error summary at the top of the page.

*) Possible results:
- New error(s) generated for the elements that where validated
- Resolved errors for the elements that where validated

Solution

Using the new JavaScript message API we can update the summary in the default location.