fix(lambda-nodejs): cannot use .mts, .cts, and .cjs entry files

[ersims]

This adds support for using TypeScript Module (.mts), TypeScript CommonJS (.cts) and JavaScript CommonJS (.cjs) entry files, as well as adding these to the default entry file search.

This is a must for projects mixing ESM and CommonJS (quite common as not everything can/should be fully ESM yet) or where explicit file extension is desired.

I tried to follow the existing convention as best I could to keep it as simple as possible. I am not sure why the tests for the existing entry files are skipped as they seem to be working correctly, at least locally, so I enabled the new tests I added.

Closes #21635.

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[gitpod-io]

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