test: robuster http2-large-file test

[BridgeAR]

This makes sure the first request is not sent before the client is
ready to respond. Therefore the ECONNRESET errors should be resolved.

Fixes: #22327

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

[nodejs-github-bot]

@BridgeAR build started: https://ci.nodejs.org/blue/organizations/jenkins/node-test-pull-request-lite-pipeline/detail/node-test-pull-request-lite-pipeline/685/pipeline

[BridgeAR]

CI https://ci.nodejs.org/job/node-test-pull-request/16770/
Stress test: https://ci.nodejs.org/job/node-stress-single-test/1995/

[Trott]

Nit on the commit message: First word after the subsystem is supposed to be an imperative verb. So maybe test: make http2-large-file test more robust or something like that?

[Trott]

Isn't the ECONNRESET a bug in the http2 implementation? You shouldn't have to do it this way, should you? If so, then the example code in our HTTP/2 docs needs to be updated.

[Trott]

(Example code that does it the way it is in this test:https://nodejs.org/api/http2.html#http2_clienthttp2session_request_headers_options)

[jasnell]

Isn't the ECONNRESET a bug in the http2 implementation? You shouldn't have to do it this way, should you?

This is on my list of things to investigate later on today. Waiting to write shouldn't be necessary.

[BridgeAR]

Going to close this due to the mentioned points.