fix(cjs-esm-interop): support module.exports in ESM

[avivkeller]

Summary

Hi! Today, I learned by using an ESM export such as the one below, you can write a CommonJS compatible script in ECMAScript modules:

export { myVariable as "module.exports" }

Now, when require-ing this module, myVariable will be returned.

However, Jest does not duplicate this behavior, so I figured I'd upstream a patch to rectify that.

Test plan

To test this, I added a few new test files (for the CJS Loader and ESM Loader), and ran yarn test.

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commit: 77635b0