Themes: Add "Block Editor Styles" and "Wide Blocks" to the list of WordPress theme features.

These were added to Theme Directory API in anticipation of being committed to core for WordPress 5.2+, which has not happened until now.

Follow-up to [meta8273].

Merges [47790] to the 5.4 branch.
See #46272.
Built from https://develop.svn.wordpress.org/branches/5.4@47791


git-svn-id: http://core.svn.wordpress.org/branches/5.4@47567 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/theme.php

@@ -278,6 +278,7 @@ function get_theme_feature_list( $api = true ) {
 
 		__( 'Features' ) => array(
 			'accessibility-ready'   => __( 'Accessibility Ready' ),
+			'block-styles'          => __( 'Block Editor Styles' ),
 			'custom-background'     => __( 'Custom Background' ),
 			'custom-colors'         => __( 'Custom Colors' ),
 			'custom-header'         => __( 'Custom Header' ),
@@ -300,6 +301,7 @@ function get_theme_feature_list( $api = true ) {
 			'four-columns'  => __( 'Four Columns' ),
 			'left-sidebar'  => __( 'Left Sidebar' ),
 			'right-sidebar' => __( 'Right Sidebar' ),
+			'wide-blocks'   => __( 'Wide Blocks' ),
 		),
 
 	);

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4.2-alpha-47773';
+$wp_version = '5.4.2-alpha-47791';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.