fix(ci): keep a failed unlabeled teardown visible to the scheduled retry

An unlabeled event removes relay:preview before the teardown runs, so a failed
destroy left a stage no retry could find. The job now restores the label after
a failed destroy. Labels added with GITHUB_TOKEN do not start new runs, so the
deploy workflow does not fire.

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
91874283c2Julius Marminge committed on 10/22/2026, 10:39:03 PMparent4a02715

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