Widgets: Add widget dedicated for HTML Code, taking over this role of the Text widget.

Props westonruter, timmydcrawford.
See #40951, #35243.
Fixes #40907.


git-svn-id: https://develop.svn.wordpress.org/trunk@40893 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/widgets/class-wp-widget-text.php

@@ -25,7 +25,7 @@ class WP_Widget_Text extends WP_Widget {
 	public function __construct() {
 		$widget_ops = array(
 			'classname' => 'widget_text',
-			'description' => __( 'Arbitrary text or HTML.' ),
+			'description' => __( 'Arbitrary text.' ),
 			'customize_selective_refresh' => true,
 		);
 		$control_ops = array(