[airflow] Autofix is suggesting to replace with the same symbol

[dhruvmanila]

This looks like a bug:

AIR302 `airflow.sensors.external_task.ExternalTaskSensor` is removed in Airflow 3.0
[...]
= help: Use `airflow.sensors.external_task.ExternalTaskSensor` instead

It's suggesting replacing with itself

Originally posted by @pbhuss in #16014 (comment)

[dhruvmanila]

cc @Lee-W

[Lee-W]

This will be addressed in the reorg PR. This is later moved to provider as well. You can just assign this one to me. Thanks!