lib,src: replace all C++ promises with JS promises

C++ promises can not be properly optimized by V8. They also behave
a tiny bit different than "regular" promises.

PR-URL: https://github.com/nodejs/node/pull/20830


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>