build: move headers out of c++ src section

This commit moves a few header files that are listed among the C++
source files for consistency.

PR-URL: https://github.com/nodejs/node/pull/24124


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>