Deleting these with the multi-file runtime set threw away properties that do not
depend on how many files publish: two wrappers racing to publish the SAME cache
still must serialize, a killed publisher still must be reconciled by locked
readiness rather than trusted, a failed publication still must restore the prior
binary, and a complete foreign winner still must never be deleted.
Restored from main and adapted: the staging fixtures publish one binary instead
of binary+integrations+pack, and the assertions that read sidecar bytes are gone
with the sidecars. Each surviving test keeps its lock/race logic intact
(7/10/5/3 assertions respectively, all still reading published binary bytes).
Revert-checked against production, not just green: disabling
_runtime_backup_target_name makes test_publication_failure_restores... fail and
restoring it passes. pypi suite: 28 tests, OK.
Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
Martin Vogel
dce5518c56