Apply suggestions from @cslzchen

Co-authored-by: Longze Chen <cslzchen@gmail.com>

Author: cslzchen

scripts/remove_after_use/merge_notification_subscription_provider_ct.py

@@ -27,15 +27,15 @@ def merge_notification_subscription_provider_ct():
 
     provider_ct_ids = [ct.id for ct in provider_ct_list]
 
-    abstract_qs = NotificationSubscription.objects.filter(
+    abstract_provider_ct_qs = NotificationSubscription.objects.filter(
         content_type=abstract_provider_ct
     )
 
     duplicates = NotificationSubscription.objects.filter(
         content_type_id__in=provider_ct_ids
     ).annotate(
         abstract_exists=Exists(
-            abstract_qs.filter(
+            abstract_provider_ct_qs.filter(
                 notification_type_id=OuterRef('notification_type_id'),
                 user_id=OuterRef('user_id'),
                 object_id=OuterRef('object_id'),