test_runner: use run() options with isolation="none"

[inukshuk]

When using run() programatically with isolation="none", testNamePatterns, testSkipPatterns, and only were ignored. This combination of options only worked when set via CLI flags, because parseCommandLine() is still used to seed globalOptions.

Closes #57399

This is almost the same as #58496 which was my starting point for this. The original PR did not address only, which is equally missing. It also did not overwrite the options if they were already in globalOptions: the only way for them to be there is via parseCommandLine() above. However, I believe we need to always override them. When run() is used in code with these options, I'd always expect them to take effect and this is also what already happens with isolation="process", which forward the run() options to the child process not the CLI ones.

This also uses a fixture for running the tests as was requested in the original PR.

The test spawns a child process, because running a test within the currently running test without isolation is problematic (tests would hang for me, could be related to #57394 but it's arguably not something that should be done).

[nodejs-github-bot]

Review requested:

• @nodejs/test_runner

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.67%. Comparing base (82409af) to head (8637ae0).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62269      +/-   ##
==========================================
- Coverage   89.67%   89.67%   -0.01%     
==========================================
  Files         676      676              
  Lines      206555   206568      +13     
  Branches    39552    39565      +13     
==========================================
+ Hits       185225   185230       +5     
- Misses      13448    13454       +6     
- Partials     7882     7884       +2     

Files with missing lines	Coverage Δ
lib/internal/test_runner/runner.js	93.28% <100.00%> (+0.08%)	⬆️

... and 25 files with indirect coverage changes

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