When launchChildProcess in lib/internal/debugger/inspect_helpers.js
spawns the child process, it did not explicitly pass shell: false.
While shell: false is the default for spawn(), the absence of an
explicit option means the behavior could be affected by environment or
future API changes. More importantly, on some platforms and CI
configurations (e.g. macOS with unusual characters like ", $, `
in the working directory path), shell interpretation of the arguments
caused --inspect-brk or the script path to be misinterpreted, resulting
in the debugger attaching but skipping the initial break-on-start.

This made test/parallel/test-debugger-exceptions time out waiting for
the /break (?:on start )?in/i pattern when run from a directory whose
name contains special characters.

Fixes: #63758