[5.0.x] Fixed #35198 -- Fixed facet filters crash on querysets with no primary key.

Thanks Simon Alef for the report.

Regression in 868e2fcdda.

Backport of a738281265 from main

django/contrib/admin/filters.py

@@ -140,7 +140,7 @@ class SimpleListFilter(FacetsMixin, ListFilter):
             if lookup_qs is not None:
                 counts[f"{i}__c"] = models.Count(
                     pk_attname,
-                    filter=lookup_qs.query.where,
+                    filter=models.Q(pk__in=lookup_qs),
                 )
         self.used_parameters[self.parameter_name] = original_value
         return counts