fix: restore shipping mocks with react-native package

[mdjastrzebski]

Summary:

PR #50784 added __mocks__ directory to npm package exclude list in package.json files.

That change broke the Jest preset that relies on RefreshControl mock being held in __mocks__:

  .mock('../Libraries/Components/RefreshControl/RefreshControl', () => ({
    __esModule: true,
    default: jest.requireActual(
      '../Libraries/Components/RefreshControl/__mocks__/RefreshControlMock',
    ).default,
  }))

From user's perspective importing RefreshControl in Jest tests breaks the test suits attempting it:

Cannot find module '../Libraries/Components/RefreshControl/__mocks__/RefreshControlMock' from'node_modules/react-native/jest/setup.js'

Note before #50784 __mocks__ folders were not excluded from react-native package.

Changelog:

[GENERAL] [FIXED] - Restore shipping Jest mocks with react-native package.

Test Plan:

Check if '../Libraries/Components/RefreshControl/__mocks__/RefreshControlMock' is present in the npm package.

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[huntie]

@mdjastrzebski Great find 😮, thanks!

I've opened an alternative fix, if that's okay 🙏🏻 — relocates this mock as source code inside our Jest preset.

#51530

[mdjastrzebski]

@huntie I like your solution even better. Based on the jest/setup.js this one the only location with __mocks__ in the path.