GHSA-494P-63J8-28P3 virtualenv: Downloaded wheel selection and caching precede verification

Summary Wheel downloads go directly into the reusable wheelhouse, while the verification target is selected from pip's textual output. A verification failure does not remove the downloaded file from that cache. Anthropic's OSS Scanner reported this as ANT-2026-ST00DRO3 in virtualenv-20261015-005,...