[FIX] calendar: wrong user updated when setting last notif ack

Since commit 91560fae56f1cba0914, we are using sudo to write
calendar_last_notif_ack, but we need to update the real partner stored
in the context.

opw-2133566

closes odoo/odoo#41982

X-original-commit: 4d6416dbc82f07c91111457b503ccfc737f802c9
Signed-off-by: Alex Tuyls <alt-odoo@users.noreply.github.com>

addons/calendar/models/res_partner.py

@@ -34,6 +34,6 @@ class Partner(models.Model):
 
     @api.model
     def _set_calendar_last_notif_ack(self):
-        partner = self.env['res.users'].browse(self.env.uid).partner_id
+        partner = self.env['res.users'].browse(self.env.context.get('uid',self.env.uid)).partner_id
         partner.write({'calendar_last_notif_ack': datetime.now()})
         return