Privacy: Avoid a PHP 7.4 notice in `WP_Privacy_Policy_Content::text_change_check()`.

When iterating over the items stored in '_wp_suggested_privacy_policy_content` meta value for the Privacy Policy page, make sure the item is an array before accessing its properties.

Props treibstoff.
Fixes #51084.
Built from https://develop.svn.wordpress.org/trunk@48836


git-svn-id: http://core.svn.wordpress.org/trunk@48598 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-wp-privacy-policy-content.php

@@ -87,7 +87,7 @@ final class WP_Privacy_Policy_Content {
 
 		// Remove the extra values added to the meta.
 		foreach ( $old as $key => $data ) {
-			if ( ! empty( $data['removed'] ) ) {
+			if ( ! is_array( $data ) || ! empty( $data['removed'] ) ) {
 				unset( $old[ $key ] );
 				continue;
 			}

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48835';
+$wp_version = '5.6-alpha-48836';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.