revert: use structuredClone in clone body steps

[KhafraDev]

Refs: nodejs/node#44985

Having the process stay open causes some annoying and unexpected consequences.

[codecov-commenter]

Codecov Report

Base: 94.08% // Head: 94.05% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (e94ac6c) compared to base (4b30d47).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1699      +/-   ##
==========================================
- Coverage   94.08%   94.05%   -0.04%     
==========================================
  Files          53       53              
  Lines        4923     4912      -11     
==========================================
- Hits         4632     4620      -12     
- Misses        291      292       +1     

Impacted Files	Coverage Δ
lib/fetch/constants.js	100.00% <ø> (+3.70%)	⬆️
lib/fetch/body.js	95.79% <100.00%> (-0.02%)	⬇️
lib/core/connect.js	98.27% <0.00%> (-1.73%)	⬇️
lib/fetch/file.js	91.86% <0.00%> (-1.17%)	⬇️

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