add purge to canceled and failed enrollment

enrollments-events/app/events/enroll_scheduled.py

@@ -30,6 +30,7 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
     offset_days = old_image.get('dedup_window_offset_days')
     billing_day = old_image.get('subscription_billing_day')
     created_by = old_image.get('created_by')
+    seat = old_image.get('seat')
     enrollment = Enrollment(
         course=old_image['course'],
         user=old_image['user'],
@@ -53,6 +54,7 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
             subscription=subscription,
             cancel_policy=bool(subscription),
             created_by=created_by,
+            seat=seat,
             scheduled_at=datetime.fromisoformat(old_image['scheduled_at']),
             # Transfer the deduplication window if it exists
             deduplication_window={'offset_days': offset_days} if offset_days else None,