[zip] Use ZipReader::Next() in UnzipWithFilterAndWriters()

Refactored UnzipWithFilterAndWriters() to use ZipReader::Next().

BUG=chromium:1295127
TEST=autoninja -C out/Default zlib_unittests && out/Default/zlib_unittests

Change-Id: Ibf57b4308eadaa31c3ea19a208220460ecef8743
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3450067


Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: François Degros <fdegros@chromium.org>
Cr-Commit-Position: refs/heads/main@{#969701}
NOKEYCHECK=True
GitOrigin-RevId: 754cf4a440eb3b144444a9bb16a9a74ddf7e03c2