test_runner: apply run() name filters with isolation none

[UditDewan]

Problem

run() validates testNamePatterns and testSkipPatterns and forwards them to spawned processes as --test-name-pattern/--test-skip-pattern flags, but never applies them to the root test's configuration. With isolation: 'none' there are no spawned processes — the test files are imported into the current process — so both options were silently ignored and every test ran.

The same filters do work as CLI flags under --test-isolation=none because the test runner entry point passes the memoized parseCommandLine() options object to run(), which spreads it into the root configuration.

Fix

Apply the validated patterns to the root test configuration when isolation is 'none'.

Doing only that would break watch mode with isolation: 'none', where a file level test with an empty name wraps the single spawned process: the name filter would reject it and no test would ever run. The equivalent breakage is observable today on the CLI, where node --test --watch --test-isolation=none --test-name-pattern=... runs nothing. Since a FileTest represents a test file rather than a named test — the patterns are applied to the tests inside the file by the spawned process — it is now exempt from name filtering, like TestHook already is.

Fixes: #64359

[nodejs-github-bot]

Review requested:

• @nodejs/test_runner

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/74949/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.11%. Comparing base (0032189) to head (a0cf638).
⚠️ Report is 784 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #64376      +/-   ##
==========================================
- Coverage   90.23%   90.11%   -0.12%     
==========================================
  Files         741      741              
  Lines      241194   242164     +970     
  Branches    45432    45576     +144     
==========================================
+ Hits       217640   218234     +594     
- Misses      15129    15441     +312     
- Partials     8425     8489      +64     

Files with missing lines	Coverage Δ
lib/internal/test_runner/runner.js	94.67% <100.00%> (+0.24%)	⬆️

... and 111 files with indirect coverage changes

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[trivikr]

This needs a rebase