[24.1] Fix extract workflow from history when implicit collection has no jobs

[mvdbeek]

Fixes #18484.

It's not ideal on the one hand, but better to have a workflow with gaps
than an internal server error IMO. We do the same for datasets in some
non-terminal states.

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[galaxyproject-sentryintegration]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: lib/galaxy/workflow/extract.py

Function	Unhandled Issue
__summarize_dataset_collection	IndexError: list index out of range /workflow/bui... Event Count: 2

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[mvdbeek]

That's a lot of flaky tests, but I think they're all unrelated 😓