Media: Maintain the functionnality of the deprecated `WP_Media_List_Table::column_desc()` method.

Follow-up to [55159].

Props peterwilsoncc, costdev, mukesh27.
Fixes #39710.

Built from https://develop.svn.wordpress.org/trunk@55249


git-svn-id: http://core.svn.wordpress.org/trunk@54782 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-media-list-table.php

@@ -503,6 +503,8 @@ class WP_Media_List_Table extends WP_List_Table {
 	 */
 	public function column_desc( $post ) {
 		_deprecated_function( __METHOD__, '6.2.0' );
+
+		echo has_excerpt() ? $post->post_excerpt : '';
 	}
 
 	/**

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-alpha-55248';
+$wp_version = '6.2-alpha-55249';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.