Use RuntimeSchedulerKey instead of stringly typed name (#53509)

Summary:
Pull Request resolved: #53509

Changelog : [Internal]

Reviewed By: lenaic

Differential Revision: D81206776

fbshipit-source-id: e71842e50da71ff27fbcd37faf28d883ec0f809a

Author: christophpurrer

packages/react-native/Libraries/AppDelegate/RCTRootViewFactory.mm

@@ -194,8 +194,8 @@ - (UIView *)createRootViewWithBridge:(RCTBridge *)bridge
   RCTTurboModuleManager *turboModuleManager = [[RCTTurboModuleManager alloc] initWithBridge:bridge
                                                                                    delegate:_turboModuleManagerDelegate
                                                                                   jsInvoker:callInvoker];
-  _contextContainer->erase("RuntimeScheduler");
-  _contextContainer->insert("RuntimeScheduler", _runtimeScheduler);
+  _contextContainer->erase(facebook::react::RuntimeSchedulerKey);
+  _contextContainer->insert(facebook::react::RuntimeSchedulerKey, _runtimeScheduler);
   return RCTAppSetupDefaultJsExecutorFactory(bridge, turboModuleManager, _runtimeScheduler);
 }
 

packages/react-native/React/Fabric/RCTSurfacePresenter.mm

@@ -246,7 +246,7 @@ - (RCTScheduler *)_createScheduler
   toolbox.contextContainer = _contextContainer;
   toolbox.componentRegistryFactory = componentRegistryFactory;
 
-  auto weakRuntimeScheduler = _contextContainer->find<std::weak_ptr<RuntimeScheduler>>("RuntimeScheduler");
+  auto weakRuntimeScheduler = _contextContainer->find<std::weak_ptr<RuntimeScheduler>>(RuntimeSchedulerKey);
   auto runtimeScheduler = weakRuntimeScheduler.has_value() ? weakRuntimeScheduler.value().lock() : nullptr;
   if (runtimeScheduler) {
     runtimeExecutor = [runtimeScheduler](std::function<void(jsi::Runtime & runtime)> &&callback) {

packages/react-native/ReactAndroid/src/main/jni/react/fabric/FabricUIManagerBinding.cpp

@@ -533,7 +533,7 @@ void FabricUIManagerBinding::installFabricUIManager(
           runtimeScheduler->scheduleWork(std::move(callback));
         };
     contextContainer->insert(
-        "RuntimeScheduler", std::weak_ptr<RuntimeScheduler>(runtimeScheduler));
+        RuntimeSchedulerKey, std::weak_ptr<RuntimeScheduler>(runtimeScheduler));
   }
 
   EventBeat::Factory eventBeatFactory =