Comments: Change new comment required text class.

Change the new class on comment required text from `comment-required-message` to `required-field-message` for better future-compatibility, enabling better reuse.

Props sabernhardt.
Fixes #16206.

Built from https://develop.svn.wordpress.org/trunk@52200


git-svn-id: http://core.svn.wordpress.org/trunk@51792 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/comment-template.php

@@ -2425,7 +2425,7 @@ function comment_form( $args = array(), $post_id = null ) {
 
 	$required_text = sprintf(
 		/* translators: %s: Asterisk symbol (*). */
-		' <span class="comment-required-message" aria-hidden="true">' . __( 'Required fields are marked %s' ) . '</span>',
+		' <span class="required-field-message" aria-hidden="true">' . __( 'Required fields are marked %s' ) . '</span>',
 		trim( $required_indicator )
 	);
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-52199';
+$wp_version = '5.9-alpha-52200';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.