Aligns behavior of field with Text widget and other widgets whereby the server-sanitized title (via the `widget-update` request) is supplied into the field after the `change` event. See #32417. Fixes #40805. Built from https://develop.svn.wordpress.org/trunk@40785 git-svn-id: http://core.svn.wordpress.org/trunk@40643 1a063a9b-81f0-0310-95a4-ce76da25c4cd