Add redirect option to strip headers on redirect

[mcollina]

This relates to...

N/A

Rationale

Allow callers using the redirect interceptor to remove selected custom request headers before a redirected request is dispatched, with support for both all redirects and cross-origin redirects only.

Changes

Features

• Add stripHeadersOnRedirect to the redirect interceptor options.
• Add stripHeadersOnCrossOriginRedirect to strip selected headers only when redirecting across origins.
• Apply configured header stripping during redirect request header cleanup.
• Add type definitions, docs, and tests for the new options.

Bug Fixes

• Import the node:test after hook in test/parser-issues.js so the current main test additions pass lint and CI.

Breaking Changes and Deprecations

N/A

Status

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

Tests

• npx borp --timeout 180000 -p "test/interceptors/redirect.js"
• npx borp --timeout 180000 -p "test/parser-issues.js"
• npx tsd --files test/types/redirect-interceptor.test-d.ts
• npx eslint lib/interceptor/redirect.js lib/handler/redirect-handler.js test/interceptors/redirect.js
• npx eslint test/parser-issues.js lib/interceptor/redirect.js lib/handler/redirect-handler.js test/interceptors/redirect.js

[codecov-commenter]

Codecov Report

❌ Patch coverage is 89.74359% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.25%. Comparing base (13f6af6) to head (48d84f7).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/handler/redirect-handler.js	88.88%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5281      +/-   ##
==========================================
- Coverage   93.26%   93.25%   -0.01%     
==========================================
  Files         110      110              
  Lines       36533    36558      +25     
==========================================
+ Hits        34071    34092      +21     
- Misses       2462     2466       +4     

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