### Body

Currently when you use multiple-outputs in decorator and it gets None value, it crashes.

As explained in https://github.com/apache/airflow/issues/32553 and workaround for ShortCircuitOperator has been implemented here:  https://github.com/apache/airflow/pull/32569 

But a more complete fix for multiple-outputs handling None is needed. 

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
@task_decorator
        def identity_dict(x: int, y: int) -> resolve(annotation):
            return {"x": x, "y": y}
        assert identity_dict(5, 5).operator.multiple_outputs is True
        
        @task_decorator()
        def identity_dict_with_decorator_call(x: int, y: int) -> resolve(annotation):
            return {"x": x, "y": y}
        assert identity_dict_with_decorator_call(5, 5).operator.multiple_outputs is True
    def test_infer_multiple_outputs_forward_annotation(self):
        if TYPE_CHECKING:
            class FakeTypeCheckingOnlyClass:
                ...
            class UnresolveableName:
                ...
        @task_decorator
        def t1(x: "FakeTypeCheckingOnlyClass", y: int) -> Dict[int, int]:  
            ...
        assert t1(5, 5).operator.multiple_outputs is True
        @task_decorator
        def t2(x: "FakeTypeCheckingOnlyClass", y: int) -> "Dict[int, int]":