### Apache Airflow version

2.1.3 (latest released)

### Operating System

macOS Big Sur 11.3.1

### Versions of Apache Airflow Providers

n/a

### Deployment

Astronomer

### Deployment details

default Astronomer deployment with some test DAGs

### What happened

In the UI for DAGRuns there are checkboxes that allow multiple DAGRuns to be selected.

![image](https://user-images.githubusercontent.com/89415310/133841290-94cda771-9bb3-4677-8530-8c2861525719.png)

Within the Actions menu on this same view, there is a Delete option which allows multiple DAGRuns to be deleted at the same time.

![image](https://user-images.githubusercontent.com/89415310/133841362-3c7fc81d-a823-4f41-8b1d-64be425810ce.png)

Task instance view on the UI does not offer the same option, even though Task Instances can be individually deleted with the trash can button.

![image](https://user-images.githubusercontent.com/89415310/133841442-3fee0930-a6bb-4035-b172-1d10b85f3bf6.png)


### What you expected to happen

I expect that the Task Instances can also be bulk deleted, in the same way that DAGRuns can be.

### How to reproduce

Open up Task Instance and DAGRun views from the Browse tab and compare the options in the Actions dropdown menus.

### Anything else

_No response_

### Are you willing to submit PR?

- [X] 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)

tests/www/views/test_views_tasks.py
_, capture_templates, admin_client, endpoint
):
    """Show external links if log handler is external."""
    url = f'{endpoint}?dag_id=example_bash_operator'
    with capture_templates() as templates:
        admin_client.get(url, follow_redirects=True)
        ctx = templates[0].local_context
        assert ctx['show_external_log_redirect']
        assert ctx['external_log_name'] == _ExternalHandler.LOG_NAME
@pytest.mark.parametrize("endpoint", ["graph", "tree"])
@unittest.mock.patch(
    'airflow.utils.log.log_reader.TaskLogReader.log_handler',
    new_callable=unittest.mock.PropertyMock,
    return_value=_ExternalHandler(),
)
def test_external_log_redirect_link_with_external_log_handler_not_shown(
    _external_handler, capture_templates, admin_client, endpoint
):
    """Show external links if log handler is external."""
    _external_handler.return_value._supports_external_link = False
    url = f'{endpoint}?dag_id=example_bash_operator'
    with capture_templates() as templates:
        admin_client.get(url, follow_redirects=True)
        ctx = templates[0].local_context
        assert not ctx['show_external_log_redirect']
        assert ctx['external_log_name'] is None
def _get_appbuilder_pk_string(model_view_cls, instance) -> str: