feat: add callback support to aws batch executor

[dondaum]

Implements executor callback support for the AWS BatchExecutor.

related: #62887

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[o-nikolas]

I still see a lot of other methods with names, types, variables, comments all mentioning tasks where it should be workloads that need cleaning up.

@ferruzzi should have a look too of course

[potiuk]

@dondaum A few things need addressing before review — see our Pull Request quality criteria.

• ⚠️Unresolved review comments: This PR has 3 unresolved review threads from maintainers. Please review and resolve all inline review comments before requesting another review. You can resolve a conversation by clicking 'Resolve conversation' on each thread after addressing the feedback. See pull request guidelines.

Note: Your branch is 278 commits behind main. Please rebase and push again to get up-to-date CI results.

No rush.

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[dondaum]

I still see a lot of other methods with names, types, variables, comments all mentioning tasks where it should be workloads that need cleaning up.

@ferruzzi should have a look too of course

I changed the reference from task to workload where I could make a change. There is a method try_adopt_task_instances() which I have not changed since it is part of the base class. But technically it should work on both tasks and callbacks.

[shivaam]

Thanks. Left a comment.

[ferruzzi]

@dondaum - Resolve that merge conflict and I'll approve once the CI is green 👍

[dondaum]

@dondaum - Resolve that merge conflict and I'll approve once the CI is green 👍

done.

[ferruzzi]

That was a long slog, and I appreciate the work you've been doing on this and the surrounding efforts. Cheers.