Helpdesk has been updated to stay compatible with recent changes in Odoo's messaging system. This keeps ticket notification emails working reliably while improving the underlying way recipient groups are prepared.

Task: https://www.odoo.com/web#id=54755&view_type=form&model=project.task&action=333&active_id=965&menu_id=4720

Linked to https://github.com/odoo/odoo/pull/23027