Hello.

Kubernetes generates a unique pod name.
https://github.com/apache/airflow/blob/736a62f824d9062b52983633528e58c445d8cc56/airflow/kubernetes/pod_generator.py#L434-L458
It would be great if the pod name was available in Airflow after completing the task, so that, for example, we could use it to add [extra links](http://airflow.apache.org/docs/apache-airflow/stable/howto/define_extra_link.

Summary

Similar to how they raise an error if you reference a pipeline that doesn't exist

Reproduction

Create a schedule that references a non-existant mode. It will fail at execution plan generation time instead of definition time

Dagit UI/UX Issue Screenshots

Additional Info about Your Environment

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