Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/29453
Problem Statement: A native module needs to call a function on `ReactInstance` (in this case `loadScript`). Typically, this is handled by the bridge.
Current Bridgeless Solution: Create a new protocol (in this case `RCTJSScriptLoaderModule`) which lets a block be passed in TM init to forward the method call to `ReactInstance`. This is the best thing I could think of right now.
Changelog:[Internal]
Reviewed By: RSNara
Differential Revision: D22512748
fbshipit-source-id: e6559279b6e299e17d1199407129ad3902c41e6b