[FIX] event: create default event emails

The group event.group_email_scheduling was removed in 10.0 at 274e94d7

Closes #16503

addons/event/models/event.py

@@ -70,7 +70,7 @@ class EventEvent(models.Model):
             'interval_unit': 'days',
             'interval_type': 'before_event',
             'template_id': self.env.ref('event.event_reminder')
-        })] if self.user_has_groups('event.group_email_scheduling') else []
+        })]
 
     # Seats and computation
     seats_max = fields.Integer(