[roger-zhangg]

Which issue(s) does this change fix?

N/A

Why is this change necessary?

Failed integration test runs are notified from the uploaded test reports. Jobs that fail before pytest writes a report (e.g. during setup), or test jobs that never start, upload nothing, so their failures are not notified.

How does it address the issue?

Adds a report-failed-jobs job that runs when the run has failed jobs. It uploads TEST_REPORT-workflow.json listing the failed jobs to the same S3 prefix as the test reports. The report processing posts only the first failure of a run, so this report is only posted when no test report was.

What side effects does this change have?

None for passing runs. Failed runs get one more job.

Mandatory Checklist

PRs will only be reviewed after checklist is complete

• Review the generative AI contribution guidelines
• Add input/output type hints to new functions/methods
• Write design document if needed (Do I need to write a design document?)
• Write/update unit tests
• Write/update integration tests
• Write/update functional tests if needed
• make pr passes
• make update-reproducible-reqs if dependencies were changed
• Write documentation

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.