fix(redirect): ignore informational responses in history

[mcollina]

This relates to...

N/A

Rationale

The redirect interceptor receives informational responses through onResponseStart, but they are not final responses and must not update redirect state. Adding each informational response to history also makes it incorrectly consume the configured redirect limit.

Changes

Features

N/A

Bug Fixes

• Forward informational responses without mutating redirect state or history.
• Add regression coverage that sends enough 102 Processing responses to exceed the configured redirect limit and verifies callback delivery and final history.

Breaking Changes and Deprecations

N/A

Status

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

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.50%. Comparing base (fb3d786) to head (1de0ac6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5813      +/-   ##
==========================================
- Coverage   93.50%   93.50%   -0.01%     
==========================================
  Files         110      110              
  Lines       39557    39562       +5     
==========================================
+ Hits        36987    36991       +4     
- Misses       2570     2571       +1     

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