Git commits in Moodle 3.10.x by Frédéric Massart

commit 78a5927d4d8197c6a772c32b433703c6f3100342
Author: Frédéric Massart <fred@branchup.tech>
Date:   Thu, 05 Aug 2021 13:42:08 +0800
Tag:    v3.10.7

MDL-72286 editor_atto: Declare type on plugins button groups