[SPARK-57002][INFRA] Enforce Upstream-First policy in merge_spark_pr.py cherry-pick prompts#56058

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viirya:infra-merge-script-upstream-first-policy

Commits on May 22, 2026

[SPARK-57002][INFRA] Enforce Upstream-First policy in merge_spark_pr.py cherry-pick prompts
viirya
committed
[SPARK-57002][INFRA][FOLLOWUP] Address review feedback from cloud-fan
viirya
committed
[SPARK-57002][INFRA][FOLLOWUP] Drop pre-existing clean_up() before fail() in _do_cherry_pick push-failure branch
viirya
committed