**Description**
The `airflow.models.baseoperator.chain()` is a very useful and convenient way to add sequential task dependencies in DAGs.  This function has [recently been updated](https://github.com/apache/airflow/issues/16635) to support `BaseOperator` and `XComArgs` but should also be able to support `Labels` as well.

**Use case / motivation**
Users who create tasks via the `@task` decorator will not be able to use the `chain()` function to apply sequential dependencies that do not share an `XComArg` implicit dependency with a `Label`.  This use case can occur when attempting to chain multiple branch labels and the next sequential task.

With the new update (yet to be released), users will receive the following exception when attempting to chain an `XComArg` and `Label`:

```bash
TypeError: Chain not supported between instances of <class 'airflow.utils.edgemodifier.EdgeModifier'> and <class 'airflow.models.xcom_arg.XComArg'>
```


**Are you willing to submit a PR?**
Absolutely. 🚀 

**Related Issues**
None

tests/models/test_baseoperator.py
def __init__(self, test_param, params=None, default_args=None):
        self.test_param = test_param
    def set_xcomargs_dependencies(self):
        ...
class DummySubClass(DummyClass):
    def __init__(self, test_sub_param, **kwargs):
        super().__init__(**kwargs)
        self.test_sub_param = test_sub_param
class TestBaseOperator(unittest.TestCase):
    def test_apply(self):
        dummy = DummyClass(test_param=True)
        assert dummy.test_param
        with pytest.raises(AirflowException, match='Argument.*test_param.*required'):
            DummySubClass(test_sub_param=True)
    def test_default_args(self):
        default_args = {'test_param': True}
        dummy_class = DummyClass(default_args=default_args)
        assert dummy_class.test_param
        default_args = {'test_param': True, 'test_sub_param': True}
        dummy_subclass = DummySubClass(default_args=default_args)
        assert dummy_class.test_param
        assert dummy_subclass.test_sub_param
        default_args = {'test_param': True}
        dummy_subclass = DummySubClass(default_args=default_args, test_sub_param=True)
        assert dummy_class.test_param
        assert dummy_subclass.test_sub_param
        with pytest.raises(AirflowException, match='Argument.*test_sub_param.*required'):
            DummySubClass(default_args=default_args)
    def test_incorrect_default_args(self):