fix(SubPlat): Complete backfill of stripe_service_subscriptions_attribution_v1 (DENG-9776, DENG-8885). (#8350)

Author: sean-rose

sql/moz-fx-data-shared-prod/subscription_platform_derived/stripe_service_subscriptions_attribution_v1/backfill.yaml

@@ -5,7 +5,7 @@
     correctly pass through FxA log-based logical subscriptions attribution (DENG-8885).
   watchers:
   - [email protected]
-  status: Initiate
+  status: Complete
   shredder_mitigation: false
   override_retention_limit: true
   override_depends_on_past_end_date: false