test: run code cache test by default and test generator

- Add the code cache tests to the default test suite, and test
  the bookkeeping when the binary is not built with the code cache.
- Test the code cache generator to make sure we do not accidentally
  break it - until we enable code cache in the CI.

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>