Optimizer tests break with django-polymorphic>=4.6.0

[mweinelt]

Describe the Bug

After upgrading django-polymorphic to 4.6.0 or newer we're seeing the following test failures on strawberry-django 0.74.3.

FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_paginated_query - AssertionError: 2 queries executed, 4 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_offset_paginated_query - AssertionError: 3 queries executed, 5 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_relation - AssertionError: 3 queries executed, 5 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_nested_list - AssertionError: 3 queries executed, 5 expected
FAILED tests/polymorphism/test_optimizer.py::test_optimizer_hints_polymorphic - AssertionError: 2 queries executed, 4 expected
FAILED tests/node_polymorphism/test_optimizer.py::test_polymorphic_interface_query - AssertionError: 2 queries executed, 4 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_interface_query - AssertionError: 2 queries executed, 4 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_query_abstract_model - AssertionError: 2 queries executed, 5 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_query_multiple_inheritance_levels - AssertionError: 2 queries executed, 5 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_query_abstract_model_on_field - AssertionError: 3 queries executed, 4 expected
FAILED tests/polymorphism/test_optimizer.py::test_polymorphic_query_optimization_working - assert False

Full log

System Information

• Operating system: Linux
• Python version: 3.13.11
• Strawberry version (if applicable): n/a

Additional Context

We package strawberry-django in nixpkgs and run the test suite to increase our confidence the package works as expected.

[bellini666]

We probably need to adjust the code to handle the new version.

I don't use django-polymorphic, so I don't have much knowledge to help here. Would you like to try to send a PR fixing it? :)