Back out "Delete RuntimeScheduler yielding mobile config"

Summary:
D33740360 (https://github.com/facebook/react-native/commit/16ed62a850dd81bd9cc7f77ab3e77f42ed64b177) broke Explore VR on React Native. The app would go into a loop on boot and not finish mounting. This is probably a product code issue, but it's not a trivial issue to solve. Unlanding to unblock the RN migration.

Changelog:

[internal] internal

Reviewed By: mdvacca

Differential Revision: D33918026

fbshipit-source-id: cc77c70ece9994d82c91f7ae8783e959629e9cfb

ReactAndroid/src/main/java/com/facebook/react/fabric/jni/Binding.cpp

@@ -369,6 +369,8 @@ void Binding::installFabricUIManager(
   if (runtimeSchedulerHolder) {
     auto runtimeScheduler = runtimeSchedulerHolder->cthis()->get().lock();
     if (runtimeScheduler) {
+      runtimeScheduler->setEnableYielding(config->getBool(
+          "react_native_new_architecture:runtimescheduler_enable_yielding_android"));
       runtimeExecutor =
           [runtimeScheduler](
               std::function<void(jsi::Runtime & runtime)> &&callback) {