fix(apple): fix notification naming inconsistency (#2466)

Author: tido64

ios/ReactTestApp/Public/ReactTestApp-DevSupport.h

@@ -7,7 +7,7 @@ OBJC_EXTERN NSNotificationName const ReactAppDidFinishLaunchingNotification;
 OBJC_EXTERN NSNotificationName const ReactAppWillInitializeReactNativeNotification;
 OBJC_EXTERN NSNotificationName const ReactAppDidInitializeReactNativeNotification;
 
-OBJC_EXTERN NSNotificationName const ReactAppRuntimeReady;
+OBJC_EXTERN NSNotificationName const ReactAppRuntimeReadyNotification;
 OBJC_EXTERN NSNotificationName const ReactAppDidRegisterAppsNotification;
 
 OBJC_EXTERN NSNotificationName const ReactAppSceneDidOpenURLNotification;

ios/ReactTestApp/ReactTestApp-DevSupport.m

@@ -8,7 +8,7 @@
 NSNotificationName const ReactAppDidInitializeReactNativeNotification =
     @"ReactAppDidInitializeReactNativeNotification";
 
-NSNotificationName const ReactAppRuntimeReady = @"ReactAppRuntimeReady";
+NSNotificationName const ReactAppRuntimeReadyNotification = @"ReactAppRuntimeReadyNotification";
 NSNotificationName const ReactAppDidRegisterAppsNotification =
     @"ReactAppDidRegisterAppsNotification";