Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/44721

For iOS builds of `react-native`, the [react-native-xcode.sh](https://www.internalfb.com/code/fbsource/[7ad79aae3e8bf565d53f087ac7f7b7622b19acec]/xplat/js/react-native-github/packages/react-native/scripts/react-native-xcode.sh) script is executed as one of the build phases.  This phase bundles the JS application (dev or production).

I've updated this to use the new `bundle.js` script instead of calling the `react-native/cli.js`.  This is identical except with how the config is captured:

{F1669960016}

This is similar to our approach with the Gradle plugin, giving Framework authors more control.

**Other:** formatting changes for the Privacy Manifest that Xcode keeps updating.

Changelog: [Internal]

Reviewed By: cipolleschi

Differential Revision: D57915368

fbshipit-source-id: f52ea4b3cb94212ac97a3d7edeb68747418fe0a9