### Description Add a POST endpoint to clear a dag run like we currently do [here](https://github.com/apache/airflow/blob/main/airflow/www/views.py#L2087). Url format: `api/v1/dags/{dag_id}/dagRuns/{dag_run_id}/clear` ### Use case/motivation _No response_ ### Related issues _No response_ ### Are you willing to submit a 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)