Since [1], the `mail.record/insert` notification is not sent to the livechat visitor. Since [2], this notification is not listened by the notification handler either. This PR fixes those issues in order to make message update instantaneous on the public livechat. 1: https://github.com/odoo/odoo/pull/120018 2: https://github.com/odoo/odoo/pull/120893 task-3349454 closes odoo/odoo#123728 X-original-commit: 6f456e3b591ebc86502e4be65768042cc223c3db Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com> Signed-off-by: Debondt Didier (did) <did@odoo.com>