test: add more coverage for zip.js and vfs archive provider

Codecov flagged low patch coverage on lib/internal/zip.js and
lib/internal/vfs/providers/archive.js in #64339. Add tests exercising
Zip64 extra-field parsing, DOS date/time edge cases, streaming-entry
state guards, decodeMemberStream/decodeMemberSync's duplicated error
branches, the ZipBuffer/ZipFile iteration protocols, several on-disk
ZipFile error paths, and ArchiveFileHandle's direct read/write/stat/
truncate surface plus a handful of provider-level error branches the
existing tests didn't reach.

Author: pipobscure