build: fast-track npm PRs and dont-land them on LTS

PR-URL: https://github.com/nodejs/node/pull/38885


Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Ruy Adorno <ruyadorno@github.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>