test: fix invalid common.mustSucceed() usage

[lpinca]

By its own nature, the function returned by common.mustSucceed() cannot be used as a listener for 'error' events.

Write errors like read ECONNRESET or write EPIPE, should be ignored because the socket might be closed by the other peer while the request is sent.

Refs: 3caa2c1a005652fdb3e8

[lpinca]

This should address the following failure

---
duration_ms: 6221.41
exitcode: 1
severity: fail
stack: |-
  node:assert:1075
      throw newErr;
      ^

  AssertionError [ERR_ASSERTION]: ifError got unwanted exception: write EPIPE
      at Socket.<anonymous> (/home/iojs/build/workspace/node/test/common/index.js:433:12)
      at Socket.<anonymous> (/home/iojs/build/workspace/node/test/common/index.js:470:15)
      at Socket.emit (node:events:507:28)
      at emitErrorNT (node:internal/streams/destroy:170:8)
      at emitErrorCloseNT (node:internal/streams/destroy:129:3)
      at process.processTicksAndRejections (node:internal/process/task_queues:90:21)
      at afterWriteDispatched (node:internal/stream_base_commons:159:15)
      at writeGeneric (node:internal/stream_base_commons:150:3)
      at Socket._writeGeneric (node:net:971:11)
      at Socket._write (node:net:983:8)
      at writeOrBuffer (node:internal/streams/writable:570:12)
      at _write (node:internal/streams/writable:499:10)
      at Writable.write (node:internal/streams/writable:508:10)
      at Timeout._onTimeout (/home/iojs/build/workspace/node/test/parallel/test-http-server-headers-timeout-delayed-headers.js:57:14)
      at listOnTimeout (node:internal/timers:614:17)
      at process.processTimers (node:internal/timers:549:7) {
    generatedMessage: false,
    code: 'ERR_ASSERTION',
    actual: Error: write EPIPE
        at afterWriteDispatched (node:internal/stream_base_commons:159:15)
        at writeGeneric (node:internal/stream_base_commons:150:3)
        at Socket._writeGeneric (node:net:971:11)
        at Socket._write (node:net:983:8)
        at writeOrBuffer (node:internal/streams/writable:570:12)
        at _write (node:internal/streams/writable:499:10)
        at Writable.write (node:internal/streams/writable:508:10)
        at Timeout._onTimeout (/home/iojs/build/workspace/node/test/parallel/test-http-server-headers-timeout-delayed-headers.js:57:14)
        at listOnTimeout (node:internal/timers:614:17)
        at process.processTimers (node:internal/timers:549:7) {
      errno: -32,
      code: 'EPIPE',
      syscall: 'write'
    },
    expected: null,
    operator: 'ifError'
  }

  Node.js v24.0.0-pre
...

Build link: https://ci.nodejs.org/job/node-test-commit-linux/62793/nodes=alpine-latest-x64/testReport/junit/(root)/parallel/test_http_server_headers_timeout_delayed_headers/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/64739/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.21%. Comparing base (1760024) to head (ec5b67f).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #56756   +/-   ##
=======================================
  Coverage   89.20%   89.21%           
=======================================
  Files         662      662           
  Lines      192124   192124           
  Branches    36972    36976    +4     
=======================================
+ Hits       171390   171406   +16     
+ Misses      13559    13549   -10     
+ Partials     7175     7169    -6     

see 25 files with indirect coverage changes