Warn on unexpected ZIP compression methods (#17885)
## Summary
This adds warnings to both our steam and sync ZIP handling on ZIP
entries that aren't "well-known." For now, "well-known" means stored
(i.e. no compression), DEFLATE, or zstd.
In practice we have duplicated codepaths for this check: one for the
"sync" (pre-downloaded) path, and one for the streaming path.
See #16911 and #17467 for context.
## Test Plan
Will update snapshots if/when they change. I'll also add a ZIP test for
this.
(Upd: added some "futzed" wheels for the ZIP tests.)
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Signed-off-by: William Woodruff <william@astral.sh>
