fix(scheduler): ignore queued stale success after defer

[anmolxlight]

Summary

• Extend the resume-after-defer stale executor success handling to cover TaskInstanceState.QUEUED in addition to SCHEDULED.
• Parametrize the scheduler regression test so both scheduled and queued post-trigger states avoid the external-kill mismatch path when next_method is set.

Testing

• uv run --project airflow-core pytest airflow-core/tests/unit/jobs/test_scheduler_job.py::TestSchedulerJob::test_process_executor_events_stale_success_when_rescheduled_after_defer -q --with-db-init
• uv run prek run ruff --files airflow-core/src/airflow/jobs/scheduler_job_runner.py airflow-core/tests/unit/jobs/test_scheduler_job.py
• uv run prek run ruff-format --files airflow-core/src/airflow/jobs/scheduler_job_runner.py airflow-core/tests/unit/jobs/test_scheduler_job.py

Closes #67287

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Important

🛠️ Maintainer triage note for @anmolxlight · by @potiuk · 2026-07-02 22:14 UTC

I've removed the ready for maintainer review label because the next step here is yours:

• This PR now has merge conflicts with main. Please rebase onto the latest main and resolve them.

The ball is in your court — you've been assigned. It'll return to the maintainer queue automatically once you rebase and mark it Ready for review — no need to re-add the label by hand.

_{Automated triage — may be imperfect; a maintainer takes the next look.}

[steveahnahn]

Hey @anmolxlight, looks like the diagnosis is right and this exact fix already landed in #68741 (merged Jul 2), which also closed #67287. That PR makes the same change to the ti_requeued resume-after-defer guard in process_executor_events It accepts ti.state in (TaskInstanceState.SCHEDULED, TaskInstanceState.QUEUED) instead of TaskInstanceState.SCHEDULED only, and adds a dedicated regression test for the queued variant.

I believe this PR can be closed now!

[anmolxlight]

Thanks @steveahnahn for catching that — confirmed that #68741 already addressed this. Closing this PR as superseded. 👋