Mock inherited static properties and methods

[rubennorte]

Summary

Mocks don't implement inherited static properties. E.g.:

Bar.js:

class Foo {
  static foo() {}
}

class Bar extends Foo {}

Bar-test.js:

jest.mock('./Bar');
const Bar = require('./Bar');
Bar.foo; // undefined

Test plan

See updated tests.

[thymikee]

Cool. Mind adding a changelog?

[rubennorte]

I've seen some issues with this change in FB infra. I'll revert it until I find and fix the cause.

[github-actions]

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