Git commits in Moodle 3.9.8 by Claude Vervoort

commit 7edc33a8cef7f76cf218ccd9953b3d270050f796
Author: Claude Vervoort <claude.vervoort@cengage.com>
Date:   Wed, 23 Jun 2021 05:31:04 +0800
Tag:    v3.9.8

MDL-71887 mod_lti: repost when no cookie due to crosssite request