fix: :status is not a string

[tsctx]

This relates to...

Rationale

The pseudo-headers :status numeric and must be converted to a string.

Changes

Features

Bug Fixes

Breaking Changes and Deprecations

Status

• I have read and agreed to the Developer's Certificate of Origin
• Tested
• Benchmarked (optional)
• Documented
• Review ready
• In review
• Merge ready

[tsctx]

cc @KhafraDev

[codecov-commenter]

Codecov Report

Attention: 22 lines in your changes are missing coverage. Please review.

Comparison is base (e39a632) 85.54% compared to head (be97968) 85.85%.
Report is 87 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2423      +/-   ##
==========================================
+ Coverage   85.54%   85.85%   +0.30%     
==========================================
  Files          76       76              
  Lines        6858     6912      +54     
==========================================
+ Hits         5867     5934      +67     
+ Misses        991      978      -13     

Files	Coverage Δ
index-fetch.js	100.00% <100.00%> (ø)
lib/api/api-stream.js	100.00% <100.00%> (ø)
lib/core/connect.js	81.25% <100.00%> (ø)
lib/fetch/body.js	97.68% <100.00%> (ø)
lib/fetch/constants.js	97.22% <100.00%> (+0.67%)	⬆️
lib/fetch/file.js	95.45% <100.00%> (+0.05%)	⬆️
lib/fetch/global.js	100.00% <ø> (ø)
lib/fetch/response.js	97.04% <100.00%> (+1.20%)	⬆️
lib/fetch/util.js	86.53% <100.00%> (+0.71%)	⬆️
lib/fetch/webidl.js	94.50% <100.00%> (-0.03%)	⬇️
... and 10 more

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[KhafraDev]

As I mentioned in my comment, pseudo (pseudo being synonymous with "fake") headers are not header fields, and shouldn't be treated as such. The issue is therefore no longer with fetch, but with how undici handles pseudo headers.

[tsctx]

@KhafraDev
I understand. I will close this PR.