fix(interceptor): add throwOnMaxRedirect to types and interceptor opts

[maruthang]

This relates to...

Fixes #4376. Continues the work from the now-closed #4377 (author abandoned after #4924 merged the docs in the opposite direction).

Rationale

Issue #4376 reported that throwOnMaxRedirect was missing from the TypeScript declarations, and that the documented usage redirect({ maxRedirections: 3, throwOnMaxRedirect: true }) did not actually work because the interceptor-level default was never plumbed through to the underlying RedirectHandler.

After #4924 settled the canonical name as throwOnMaxRedirect (singular, matching existing code), the remaining gaps are:

1. The option is missing from RedirectInterceptorOpts in types/interceptors.d.ts, so TypeScript users get a compile error when following the docs.
2. lib/interceptor/redirect.js only accepts maxRedirections as a default; throwOnMaxRedirect set on the interceptor itself is silently dropped — only the per-request value works.
3. RedirectHandler does not validate the option type.

Changes

Bug Fixes

• Plumb throwOnMaxRedirect from createRedirectInterceptor defaults through dispatchOpts so redirect({ maxRedirections: 3, throwOnMaxRedirect: true }) behaves as documented.
• Add throwOnMaxRedirect?: boolean to RedirectInterceptorOpts in types/interceptors.d.ts.
• Validate opts.throwOnMaxRedirect in RedirectHandler and throw InvalidArgumentError('throwOnMaxRedirect must be a boolean') for non-boolean values.
• Add a JS regression test for the interceptor-level default and validation, plus a new tsd type test for RedirectInterceptorOpts.

Status

• I have read and agreed to the Developer's Certificate of Origin
• Tested
• Benchmarked (optional)
• Documented (already documented in docs/docs/api/Dispatcher.md after docs: update broken links in file "Dispatcher.md" #4924; this PR makes the docs functional)
• Review ready
• In review
• Merge ready

[mcollina]

lgtm

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.09%. Comparing base (e1211a5) to head (bfc0e79).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5066      +/-   ##
==========================================
- Coverage   93.10%   93.09%   -0.02%     
==========================================
  Files         110      110              
  Lines       35788    35792       +4     
==========================================
  Hits        33322    33322              
- Misses       2466     2470       +4     

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[maruthang]

Friendly nudge @mcollina — approval + green CI + codecov happy. Ready to land whenever convenient. 🙏