GHSA-F2G3-HH2R-CWGC Distribution: stale blob access resurrection via repo-scoped redis descriptor cache invalidation

summary: distribution can restore read access in repo a after an explicit delete when storage.cache.blobdescriptor: redis and storage.delete.enabled: true are both enabled. the delete path clears the shared digest descriptor but leaves stale repo-scoped membership behind, so a later Stat or Get...