### 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.
"""Tests dag.task property to generate task"""
        @self.dag.task
        def add_2(number: int):
            return number + 2
        test_number = 10
        res = add_2(test_number)
        add_2(res)
        assert "add_2" in self.dag.task_ids
    def test_dag_task_multiple_outputs(self):
        """Tests dag.task property to generate task with multiple outputs"""
        @self.dag.task(multiple_outputs=True)
        def add_2(number: int):
            return {"1": number + 2, "2": 42}
        test_number = 10
        add_2(test_number)
        add_2(test_number)
        assert "add_2" in self.dag.task_ids
    @pytest.mark.parametrize(
        argnames=["op_doc_attr", "op_doc_value", "expected_doc_md"],
        argvalues=[
            pytest.param("doc", "task docs.", None, id="set_doc"),
            pytest.param("doc_json", '{"task": "docs."}', None, id="set_doc_json"),
            pytest.param("doc_md", "task docs.", "task docs.", id="set_doc_md"),
            pytest.param("doc_rst", "task docs.", None, id="set_doc_rst"),
            pytest.param("doc_yaml", "task:\n\tdocs", None, id="set_doc_yaml"),
            pytest.param("doc_md", None, "Adds 2 to number.", id="no_doc_md_use_docstring"),
        ],
    )
    def test_task_documentation(self, op_doc_attr, op_doc_value, expected_doc_md):