Refs #34975 -- Complemented rhs filtering aggregations for __in lookup.

While this isn't a regression it's clear that similar logic should be
applied when dealing with lists of expressions passed as a lookup value.

django/db/models/lookups.py

@@ -471,6 +471,14 @@ class IntegerLessThanOrEqual(IntegerFieldOverflow, LessThanOrEqual):
 class In(FieldGetDbPrepValueIterableMixin, BuiltinLookup):
     lookup_name = "in"
 
+    def get_refs(self):
+        refs = super().get_refs()
+        if self.rhs_is_direct_value():
+            for rhs in self.rhs:
+                if get_rhs_refs := getattr(rhs, "get_refs", None):
+                    refs |= get_rhs_refs()
+        return refs
+
     def get_prep_lookup(self):
         from django.db.models.sql.query import Query  # avoid circular import
 

django/db/models/sql/query.py

@@ -1268,7 +1268,7 @@ class Query(BaseExpression):
             # The items of the iterable may be expressions and therefore need
             # to be resolved independently.
             values = (
-                self.resolve_lookup_value(sub_value, can_reuse, allow_joins)
+                self.resolve_lookup_value(sub_value, can_reuse, allow_joins, summarize)
                 for sub_value in value
             )
             type_ = type(value)

tests/aggregation/tests.py

@@ -2315,3 +2315,9 @@ class AggregateAnnotationPruningTests(TestCase):
             max_book_author=Max("book__authors"),
         ).aggregate(count=Count("id", filter=Q(id=F("max_book_author"))))
         self.assertEqual(aggregates, {"count": 1})
+
+    def test_aggregate_reference_lookup_rhs_iter(self):
+        aggregates = Author.objects.annotate(
+            max_book_author=Max("book__authors"),
+        ).aggregate(count=Count("id", filter=Q(id__in=[F("max_book_author"), 0])))
+        self.assertEqual(aggregates, {"count": 1})