lib: fix code cache generation

e7f710c1 broke the code cache generation since internalBinding
is now passed in through the wrapper and cannot be redeclared.
This patch fixes that.

Refs: https://github.com/nodejs/node/issues/21563
PR-URL: https://github.com/nodejs/node/pull/23855


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>