This commit adds a new flag `--disable-sigusr1` to prevent
the SignalIOThread to be up listening the SIGUSR1 events and
then starting the debugging session.
PR-URL: https://github.com/nodejs/node/pull/56441
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>