fix(getRequestWebStream): reuse buffered body if available

[oscartbeaumont]

🔗 Linked issue

#615

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Refer to issue #615

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[codecov]

Codecov Report

Attention: 12 lines in your changes are missing coverage. Please review.

Comparison is base (845eeca) 74.67% compared to head (3a670f0) 74.51%.

Files	Patch %	Lines
src/utils/body.ts	66.66%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #616      +/-   ##
==========================================
- Coverage   74.67%   74.51%   -0.17%     
==========================================
  Files          47       47              
  Lines        4249     4269      +20     
  Branches      574      576       +2     
==========================================
+ Hits         3173     3181       +8     
- Misses       1061     1073      +12     
  Partials       15       15              

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[pi0]

Thanks!

I have pushed few more refactors to cover more of edge cases using readRawBody