Summary:
As part of decoupling our dependency on the react-native-community/cli, the `react-native.config.js` which is
a part of the community's config ecosystem should probably be entirely removed from the react-native package.
As part of this, we're making the config fail gracefully if these dependencies aren't available in a user's project:
- react-native-community/cli-platform-android
- react-native-community/cli-platform-ios
Changelog: [Internal]
This isn't going to be a visible change to any users.
bypass-github-export-checks
Reviewed By: cortinico
Differential Revision: D56137820
fbshipit-source-id: 528e25809a83b90e79b806a875001fc0f06db1cf