[minizip] Check LFH / CD encryption flag consistency

unz64local_CheckCurrentFileCoherencyHeader performs various consistency
checks on the values in the Local File Header and Central Directory.
Make it check the encryption flag as well.

Bug: 514461031
Change-Id: Ifaf8620c6e0c345118712bce6e1206bbb83b3a2d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7942389
Reviewed-by: Adenilson Cavalcanti <cavalcantii@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Auto-Submit: Hans Wennborg <hans@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1651090}
NOKEYCHECK=True
GitOrigin-RevId: 85e1f72188e40a6ef40c6cec7fc395ebbab0b9ff