inspector: do not spin-wait while waiting for the initial connection

Fixes: https://github.com/nodejs/node/issues/28741

PR-URL: https://github.com/nodejs/node/pull/28756


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Aleksei Koziatinskii <ak239spb@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>