build: do not copy v8-inspector* headers ar part of install

These headers are exposed from V8 for embedder and should not be
used by native addons.

Fixes https://github.com/nodejs/node/issues/22415

PR-URL: https://github.com/nodejs/node/pull/22586


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>