Fix nightlies by backing out "[RN][iOS] Decouple Hermes from JSI nd simplify dependencies" (#51620)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/51620

The spirit of "Decouple Hermes from JSI nd simplify dependencies" is good, but the problem is that when we ships prebuilds of hermes-engine, it tries to load `libjsi.dylib` and that library is not available.

{F1978594163}

I'll have to investigate more how to properly decouple Hermes prebuilds and how to pass jsi to Hermes and react-native. We might have to decouple it further and have a separate job that builds jsi and feed it to hermes.

This problem will go away with SwiftPM, though, so probably not worth solving this.

## Changelog:
[Internal] - Fix nightlies with a backout

Reviewed By: cortinico

Differential Revision: D75442056

fbshipit-source-id: f1085be8247c0974854254c6bd631ca258488beb