Use node: prefix to bypass require.cache call for builtins

[Fdawgs]

Allows redundant require.cache calls to be bypassed for builtin modules, saving a few yoctoseconds.

See https://nodejs.org/api/modules.html#core-modules and discussion in nodejs/node repo regarding why require.cache calls are redundant for builtins.

[Balearica]

Thanks for your contribution. Merged.

[Balearica]

This change ended up included in v4.1.3, however I ended up reverting it shortly after and releasing a v4.1.4. Unfortunately, it turns out that support for the node: prefix was introduced towards the end of Node.js v14 (minor release 18 of 21), meaning that is breaks Tesseract.js for most versions of Node.js 14. This was regrettably not caught by the automated testing as that uses the latest version of Node.js 14.

As Tesseract.js v4 was advertised as supporting Node.js v14, dropping support is a breaking change, so therefore semantic versioning rules dictate this cannot be implemented in another v4 version. While I am releasing v5 shortly, I'm still opting not to include this for now as I've learned that a surprising number of users use old versions of software. Can add this back in the eventual Tesseract.js v6, once Node.js v14 is sufficiently in the rear view that we won't get (many) complaints dropping support.

[Fdawgs]

No worries, thanks for the update @Balearica! And thanks for continuing to maintain this!