refactor: remove zlib-sync

[didinele]

Please describe the changes this PR makes and why it should be merged: draft because vlad wants us to keep zlib-sync & the new pure-native node:zlib impl together for a few dev releases

Status and versioning classification:

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⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟠 Performance	71
🟢 Accessibility	100
🟢 Best practices	92
🟢 SEO	100
🟠 PWA	70

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[codecov[bot]]

Codecov Report

Merging #9279 (37e7135) into main (ba93bc8) will decrease coverage by 0.02%. The diff coverage is 31.03%.

@@            Coverage Diff             @@
##             main    #9279      +/-   ##
==========================================
- Coverage   83.54%   83.53%   -0.02%     
==========================================
  Files         100      100              
  Lines        9574     9578       +4     
  Branches     1103     1103              
==========================================
+ Hits         7999     8001       +2     
- Misses       1535     1537       +2     
  Partials       40       40              

Flag	Coverage Δ
ws	57.60% <31.03%> (-0.02%)	:arrow_down:

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Impacted Files	Coverage Δ
packages/ws/src/ws/WebSocketShard.ts	21.14% <9.09%> (-0.61%)	:arrow_down:
packages/ws/src/utils/constants.ts	86.30% <100.00%> (+0.19%)	:arrow_up:
packages/ws/src/ws/WebSocketManager.ts	96.27% <100.00%> (+0.07%)	:arrow_up:

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[JMTK]

Just a small followup to this issue: I created a PR for zlib-sync that addresses it not compiling on NodeJS 21 https://github.com/abalabahaha/zlib-sync/pull/11

[didinele]

closing in favor of a new PR since this has the branch on my fork and it's just a whole mess to work with.