Back out "Roll out RCTNetworking extraneous NativeModule call removal"

Summary:
It broke Forecast.

Original commit changeset: 0da20475a088

Changelog: [Internal]

Differential Revision: D25641098

fbshipit-source-id: 94daf0479963745bbca50b409b5a1dec1c8e8e71

Libraries/Network/RCTNetworking.ios.js

@@ -18,8 +18,13 @@ import type {RequestBody} from './convertRequestBody';
 
 class RCTNetworking extends NativeEventEmitter {
   constructor() {
+    const disableCallsIntoModule =
+      typeof global.__disableRCTNetworkingExtraneousModuleCalls === 'function'
+        ? global.__disableRCTNetworkingExtraneousModuleCalls()
+        : false;
+
     super(NativeNetworkingIOS, {
-      __SECRET_DISABLE_CALLS_INTO_MODULE_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: true,
+      __SECRET_DISABLE_CALLS_INTO_MODULE_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: disableCallsIntoModule,
     });
   }