test: Add ParallelFor compile test over single artifact.

[KevinGrantLee]

Description of your changes:

Adds additional test for #10441

Checklist:

• The title for your pull request (PR) should follow our title convention. Learn more about the pull request title convention used in this repository.

[google-oss-prow]

@KevinGrantLee: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
kfp-kubernetes-execution-tests	ac79983	link	false	/test kfp-kubernetes-execution-tests

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[connor-mccarthy]

/lgtm
/approve

Thanks, @KevinGrantLee!

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: connor-mccarthy

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