Git commits in Moodle 3.9.8 by Huong Nguyen

commit 5fae2fc7a13a155fec607dc0c985a73a82e26b97
Author: Huong Nguyen <huongn@moodle.com>
Date:   Mon, 05 Jul 2021 18:25:09 +0800
Tag:    v3.9.8

MDL-71922 file: Enhance endless recursion requests protection