Files
react-native/Libraries
Ramanpreet Nara 4c5182c1cc RCTNetworking: Use RCTModuleRegistry to load handlers
Summary:
## Context
A React Native application can configure its RCTNetworking by initializing it with id<RCTURLRequestHandler> objects.

Therefore, RCTNetworking supports this initializer:
```
- (instancetype)initWithHandlersProvider:(NSArray<id<RCTURLRequestHandler>> * (^)(void))getHandlers
```

Right now, all id<RCTURLRequestHandler> are NativeModules. So, they need to be loaded using the Bridge/TurboModuleManager.

## Problem
The method [that constructs RCTNetworking](https://www.internalfb.com/code/fbsource/[6530647879a5e6d5edcfad029b39879c87e97bb3]/fbobjc/Apps/Wilde/FBReactModule2/FBReactModuleAPI/FBReactModuleAPI/FBReactModule.mm?lines=1471) is shared between bridge mode and bridgeless mode. So, the shared constructor needs to know what infra to use to load the request handlers: the TurboModuleManager, when called from a bridgeless context; the bridge, when called from a bridge context. There's no easy way to let this shared constructor know what context it's being called from. We could fork the constructor, but that's not very clean.

## Changes
In this refactor, RCTNetworking gives its _handlersProvider its RCTModuleRegistry. If the module was instantiated in bridgeless mode, RCTModuleRegistry will use the TurboModuleManager. If the module was instantiated in bridge mode, RCTModuleRegistry will use the bridge. Using RCTModuleRegistry allows the _handlersProvider to load id<RCTURLRequestHandler> from correct infra, in both contexts.

Changelog: [iOS][Changed] - Give RCTNetworking handler provider block RCTModuleRegistry

Reviewed By: PeteTheHeat

Differential Revision: D28013000

fbshipit-source-id: 956d660771ab18f5e7f24fcc28792f9a217146e7
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