Email element does not have default #ajax event

Problem/Motivation

When RenderElement::preRenderAjaxForm processes #ajax, it assigns default triggering events based on element types.

Currently, all text inputs check for the blur event:

        case 'password':
        case 'textfield':
        case 'number':
        case 'tel':
        case 'textarea':
          $element['#ajax']['event'] = 'blur';
          break;

The email input is missing. When adding #ajax to an email element, nothing happens.

I'm assuming this falls under the render system since it is part of the processing system rather than actual AJAX.

Steps to reproduce

Proposed resolution

Add email to the switch case above.

Remaining tasks

Do it
Add test coverage that it's there?

User interface changes

NA

Introduced terminology

NA

API changes

NA

Data model changes

NA

Release notes snippet

NA