test: update startCLI to set --port=0 by default

[dario-piotrowicz]

update the startCLI debugging testing utility to set by default the port to use to 0 (i.e. a random port)

---

To me this sounds like the most appropriate default behavior since:

• setting the port to 0 is the general correct behavior and most startCLI calls currently indeed do that
• generally forgetting to set the port to 0 would most likely lead to issues down the line that would however not be immediately apparent such as flakiness (i.e. it's easy to forget and doing so can cause issues later on)
  (for example see: test: add missing port=0 arg in test-debugger-extract-function-name #58977)
• when a specific port should be used that's clear based on the test and the caller would in any case need to already factor that in in the startCLI call, if they didn't the test would always fail (instead of generally passing but with potential flakes)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.05%. Comparing base (0992d28) to head (c98281c).
Report is 44 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #59042      +/-   ##
==========================================
- Coverage   90.06%   90.05%   -0.02%     
==========================================
  Files         641      648       +7     
  Lines      188846   190967    +2121     
  Branches    37049    37429     +380     
==========================================
+ Hits       170087   171966    +1879     
- Misses      11476    11620     +144     
- Partials     7283     7381      +98     

see 100 files with indirect coverage changes

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[dario-piotrowicz]

thanks @aduh95 🙏

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68035/

[aduh95]

@dario-piotrowicz don't forget to add author ready PRs that have at least one approval, no pending requests for changes, and a CI started.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68039/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/68043/

[dario-piotrowicz]

@dario-piotrowicz don't forget to add author ready

Sorry, I have forgotten about the label lately, I'll be more careful, thanks 🙏

[nodejs-github-bot]

Landed in 29626f8