test_runner: enable coverage on run() with isolation: 'none'

run({ coverage: true, isolation: 'none' }) previously returned an
empty file list because V8 precise coverage is only started at
bootstrap when NODE_V8_COVERAGE or --experimental-test-coverage is
set, neither of which the API path requires. Call the new
profiler.startCoverage() binding from setupCoverage() so the parent
isolate is instrumented when the run() API is the entry point.

Fixes: #60023
Signed-off-by: sangwook <rewq5991@gmail.com>

Author: Han5991

lib/internal/test_runner/coverage.js

@@ -533,6 +533,8 @@ function setupCoverage(options) {
     return null;
   }
 
+  internalBinding('profiler').startCoverage();
+
   // Ensure that NODE_V8_COVERAGE is set so that coverage can propagate to
   // child processes.
   process.env.NODE_V8_COVERAGE = coverageDirectory;