Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49514

This attemps to enable Config Caching on CI. I'm curious to see how much time this is going to save.
There might be some problems with nigthlies so I want to make sure this is running for some days before the branch cut.

Changelog:
[Internal] [Changed] -

Reviewed By: NickGerleman

Differential Revision: D69846848

fbshipit-source-id: 0d5c292e65a6107df62f6494a1aae9abd0e8b6cc