crypto: move typechecking for timingSafeEqual into C++

This makes the function more robust against V8 inlining.

Fixes: https://github.com/nodejs/node/issues/34073

PR-URL: https://github.com/nodejs/node/pull/34141


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ujjwal Sharma <ryzokuken@disroot.org>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Zeyu Yang <himself65@outlook.com>