diff -r be944660c56a -r 3d72ae0968f4 wp/wp-includes/theme-compat/embed-content.php
--- a/wp/wp-includes/theme-compat/embed-content.php	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-includes/theme-compat/embed-content.php	Tue Sep 27 16:37:53 2022 +0200
@@ -27,7 +27,7 @@
 		 *
 		 * @since 4.9.0
 		 *
-		 * @param int $thumbnail_id Attachment ID.
+		 * @param int|false $thumbnail_id Attachment ID, or false if there is none.
 		 */
 		$thumbnail_id = apply_filters( 'embed_thumbnail_id', $thumbnail_id );