fix: Set fs building/polyfill empty for better package support

[TheLarkInn]

Fixes #1583.

Certain packages have issues with the default webpack node build-ins. fs specifically. Setting this to empty fixes this problem.

[googlebot]

We found a Contributor License Agreement for you (the sender of this pull request) and all commit authors, but as best as we can tell these commits were authored by someone else. If that's the case, please add them to this pull request and have them confirm that they're okay with these commits being contributed to Google. If we're mistaken and you did author these commits, just reply here to confirm.

[TheLarkInn]

@googlebot HEY! Yes I signed it!!!

[filipesilva]

@googlebot these commits were authored by me and @TheLarkInn and we are ok with them being used in this PR.

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