https: limit proxy CONNECT response headers

[mcollina]

• enforce the effective HTTP maximum header size while reading HTTPS proxy CONNECT responses
• use a one-shot readable listener while waiting for additional response data
• add regression coverage for fragmented, incomplete proxy response headers

[nodejs-github-bot]

Review requested:

• @nodejs/crypto
• @nodejs/http
• @nodejs/net

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.23%. Comparing base (cf882a7) to head (6c6d170).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #64545      +/-   ##
==========================================
- Coverage   90.24%   90.23%   -0.01%     
==========================================
  Files         739      739              
  Lines      241667   241712      +45     
  Branches    45550    45542       -8     
==========================================
+ Hits       218093   218120      +27     
+ Misses      15109    15107       -2     
- Partials     8465     8485      +20     

Files with missing lines	Coverage Δ
lib/https.js	98.26% <100.00%> (+0.03%)	⬆️

... and 29 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/74869/