Fix policies not triggering properly

core/views/notifications.py

@@ -73,7 +73,7 @@ class RuleClear(LoginRequiredMixin, PermissionRequiredMixin, APIView):
         rule = NotificationRule.objects.get(pk=pk, user=request.user)
         if isinstance(rule.match, dict):
             for index in rule.match:
-                rule.match[index] = False
+                rule.match[index] = None
         rule.save()
 
         cleared_indices = ", ".join(rule.match)