### Apache Airflow version

2.6.3

### What happened

When the condition in ```ShortCircuitOperator``` is truthy it is returned at
https://github.com/apache/airflow/blob/a2ae2265ce960d65bc3c4bf805ee77954a1f895c/airflow/operators/python.py#L252
but when it is falsy, the function falls through without returning anything.

If ```multiple_outputs``` is set ```true``` (with for example ```@task.short_circuit(multiple_outputs=True```) ```_handle_output``` of
```DecoratedOperator``` at
https://github.com/apache/airflow/blob/a2ae2265ce960d65bc3c4bf805ee77954a1f895c/airflow/decorators/base.py#L242
does not test for None and raises at
https://github.com/apache/airflow/blob/a2ae2265ce960d65bc3c4bf805ee77954a1f895c/airflow/decorators/base.py#L255
This makes it impossible to pass a falsy value (i.e. an empty dictionary) so ```ShortCircuitOperator``` is unusable with ```multiple_outputs=true```


### What you think should happen instead

Probably the ```xcom_push``` should not be attempted with ```None```, or possibly the condition should be returned by ```ShortCircuitOperator``` even if it is falsy

### How to reproduce

```python
@task.short_circuit(multiple_outputs=True)
def test():
  return {}
```

### Operating System

Ubuntu 22.04.2 LTS

### Versions of Apache Airflow Providers

_No response_

### Deployment

Official Apache Airflow Helm Chart

### Deployment details

_No response_

### Anything else

_No response_

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

[
            ("task1", [State.SUCCESS, State.SUCCESS, State.SUCCESS]),
            ("join", [State.SUCCESS, State.SKIPPED, State.SUCCESS]),
        ],
    )
    def test_empty_branch(self, choice, expected_states):
        """
        Tests that BranchPythonOperator handles empty branches properly.
        """
        with self.dag:
            branch = BranchPythonOperator(task_id=self.task_id, python_callable=lambda: choice)
            task1 = EmptyOperator(task_id="task1")
            join = EmptyOperator(task_id="join", trigger_rule="none_failed_min_one_success")
            branch >> [task1, join]
            task1 >> join
        dr = self.create_dag_run()
        task_ids = [self.task_id, "task1", "join"]
        tis = {ti.task_id: ti for ti in dr.task_instances}
        for task_id in task_ids:  
            task_instance = tis[task_id]
            task_instance.refresh_from_task(self.dag.get_task(task_id))
            task_instance.run()
        def get_state(ti):
            ti.refresh_from_db()
            return ti.state
        assert [get_state(tis[task_id]) for task_id in task_ids] == expected_states
class TestShortCircuitOperator(BasePythonTest):
    opcls = ShortCircuitOperator
    @pytest.fixture(autouse=True)
    def setup_tests(self):