fix: Fix subscriptions sending twice

ee/tasks/subscriptions/__init__.py

@@ -117,7 +117,7 @@ def _deliver_subscription_report(
         raise NotImplementedError(f"{subscription.target_type} is not supported")
 
     if not is_new_subscription_target:
-        subscription.set_next_delivery_date()
+        subscription.set_next_delivery_date(subscription.next_delivery_date)
         subscription.save()
 
 

posthog/models/subscription.py

@@ -130,6 +130,8 @@ def save(self, *args, **kwargs) -> None:
         # Only if the schedule has changed do we update the next delivery date
         if not self.id or str(self._rrule) != str(self.rrule):
             self.set_next_delivery_date()
+            if "update_fields" in kwargs:
+                kwargs["update_fields"].append("next_delivery_date")
         super(Subscription, self).save(*args, **kwargs)
 
     @property