Add an option to stop backfill automatically if one dag has failed

### Description As a maintainer of a dag I would like to stop the backfill automatically if one dag execution has failed In order to avoid useless computation and logs As a maintainer of a dag I would like to add an option `Stop backfill if on dag has failed` in the `Trigger > Backfill` form, just below `Run backwards` option In order to change backfill behaviour <img width="875" height="512" alt="Image" src="https://github.com/user-attachments/assets/f20ce910-8410-4931-af0d-db4287c39e95" /> As a maintainer of a dag I would like to resume backfill execution after failure In order to continue backfill once the issue is resolved ### Use case/motivation In our case, each dag execution depends on the previous one. Thus, during a backfill if one dag execution has failed all others will also fail. <img width="112" height="496" alt="Image" src="https://github.com/user-attachments/assets/c10e506e-6d4f-406d-b2c2-2650d0893680" /> So, all dag will fail in cascade, causing useless computation and logs. This new option `Stop backfill if on dag has failed` should stop backfill after the first dag execution failure. ### 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)