test: drain request bodies in request tests

[trivikr]

This relates to...

Fixes: #5227

Rationale

Some tests only awaited request() and asserted the status code, leaving response bodies unconsumed. That can keep sockets or async cleanup alive longer than the test body, which may contribute to intermittent file-level failures in CI.

Changes

Drains successful request() response bodies in test/request.js with body.dump().

Features

N/A

Bug Fixes

N/A

Breaking Changes and Deprecations

N/A

Status

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• Tested
• Benchmarked (optional)
• Documented
• Review ready
• In review
• Merge ready

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.27%. Comparing base (4f8f814) to head (1a85563).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5247   +/-   ##
=======================================
  Coverage   93.27%   93.27%           
=======================================
  Files         110      110           
  Lines       36366    36366           
=======================================
  Hits        33922    33922           
  Misses       2444     2444           

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