When a strawberry type definition is generic, it reports a deprecation warning about _type_definition, but the alternative __strawberry_definition__ is not set.

Describe the Bug

Reproduction:

from typing import Generic, TypeVar
import strawberry
from strawberry.printer import print_schema

T = TypeVar("T")


@strawberry.type
class GenericType(Generic[T]):
    @strawberry.field
    def type_field(self) -> T:
        ...


@strawberry.type
class Query:
    @strawberry.field
    def int_generic(self) -> GenericType[int]:
        ...


print(print_schema(strawberry.Schema(query=Query)))

print(GenericType[int]._type_definition)

print(GenericType[int].__strawberry_definition__)

This prints:

• The schema (which looks as expected)
• A deprecation warning that says to use __strawberry_definition__ not _type_definition
• StrawberryObjectDefinition object (which is set)
• An AttributeError that __strawberry_definition__ does not exsting.

type IntGenericType {
  typeField: Int!
}

type Query {
  intGeneric: IntGenericType!
}
/Users/james/repos/strawberry-example/.venv/lib/python3.11/site-packages/strawberry/utils/deprecations.py:23: UserWarning: _type_definition is deprecated, use __strawberry_definition__ instead
  self.warn()
StrawberryObjectDefinition(name='GenericType', is_input=False, is_interface=False, origin=<class '__main__.GenericType'>, description=None, interfaces=[], extend=False, directives=(), is_type_of=None, resolve_type=None, _fields=[Field(name='type_field',type=<strawberry.type.StrawberryTypeVar object at 0x104362d10>,default=<dataclasses._MISSING_TYPE object at 0x1030875d0>,default_factory=<dataclasses._MISSING_TYPE object at 0x1030875d0>,init=False,repr=False,hash=None,compare=False,metadata=mappingproxy({}),kw_only=True,_field_type=_FIELD)], concrete_of=None, type_var_map={})
Traceback (most recent call last):
  File "/Users/james/repos/strawberry-example/models.py", line 26, in <module>
    print(GenericType[int].__strawberry_definition__)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/james/.pyenv/versions/3.11.5/lib/python3.11/typing.py", line 1295, in __getattr__
    raise AttributeError(attr)
AttributeError: __strawberry_definition__

I think the expected behaviour is that it should be possible to print just __strawberry_definition__, with no deprecation warning. This works if the type is not generic.

System Information

• Operating system: macos 14
• Strawberry version (if applicable): 0.209.2