Ignore incorrect file permissions in tarballs.

Created by: varungandhi-src

Resolution for permission denied errors when exploring tarball contents:

[gitserver] ERROR failed to clone repo, repo: npm/pngjs, error: get clone command: failed to fetch repo for [file://npm/pngjs](file:///pngjs): error pushing dependency "[email protected]": failed to decompress gzipped tarball for [email protected]: open /var/folders/m9/8lyqvm9115s3dn551zm26ps40000gn/T/npm-1733821758/package/.eslintrc.json: permission denied

Test plan

Added test cases.