registration error event

Summary:
This is an updated version of #2336 and #7694.

 ---

This adds a `registrationError` event that is emitted by `PushNotificationIOS` whenever an application receives a registration error from APNS (APNS service failure, running on simulator, etc).  This event fires to the exclusion of the `register` event (and vice versa).

**How to use**

Add the following to your `AppDelegate.m`:

```obj-c
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
  [RCTPushNotificationManager didFailToRegisterForRemoteNotificationsWithError:error];
}
```

And register an event handler for the event:

```js
PushNotificationIOS.addEventListener('registrationError', function({ message, code }) {
  // Complete your registration process in error.
});
```

**Test plan**

Added support for this event (and `register`) to UIExplorer as a proof of concept.  Navigating to the push notifications example on a simulator is an easy way to reproduce this e
Closes https://github.com/facebook/react-native/pull/9650

Differential Revision: D3822142

Pulled By: javache

fbshipit-source-id: a15ed8941b74dc3eed2c44c658deccbcaf39ce3d

Libraries/PushNotificationIOS/RCTPushNotificationManager.m

@@ -20,6 +20,7 @@ NSString *const RCTRemoteNotificationsRegistered = @"RemoteNotificationsRegister
 NSString *const RCTRegisterUserNotificationSettings = @"RegisterUserNotificationSettings";
 
 NSString *const RCTErrorUnableToRequestPermissions = @"E_UNABLE_TO_REQUEST_PERMISSIONS";
+NSString *const RCTErrorRemoteNotificationRegistrationFailed = @"E_FAILED_TO_REGISTER_FOR_REMOTE_NOTIFICATIONS";
 
 @implementation RCTConvert (UILocalNotification)
 
@@ -86,6 +87,10 @@ RCT_EXPORT_MODULE()
                                            selector:@selector(handleRemoteNotificationsRegistered:)
                                                name:RCTRemoteNotificationsRegistered
                                              object:nil];
+  [[NSNotificationCenter defaultCenter] addObserver:self
+                                           selector:@selector(handleRemoteNotificationRegistrationError:)
+                                               name:RCTErrorRemoteNotificationRegistrationFailed
+                                             object:nil];
   [[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(handleRegisterUserNotificationSettings:)
                                                name:RCTRegisterUserNotificationSettings
@@ -101,7 +106,8 @@ RCT_EXPORT_MODULE()
 {
   return @[@"localNotificationReceived",
            @"remoteNotificationReceived",
-           @"remoteNotificationsRegistered"];
+           @"remoteNotificationsRegistered",
+           @"remoteNotificationRegistrationError"];
 }
 
 + (void)didRegisterUserNotificationSettings:(__unused UIUserNotificationSettings *)notificationSettings
@@ -127,6 +133,13 @@ RCT_EXPORT_MODULE()
                                                     userInfo:@{@"deviceToken" : [hexString copy]}];
 }
 
++ (void)didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
+{
+  [[NSNotificationCenter defaultCenter] postNotificationName:RCTErrorRemoteNotificationRegistrationFailed
+                                                      object:self
+                                                    userInfo:@{@"error": error}];
+}
+
 + (void)didReceiveRemoteNotification:(NSDictionary *)notification
 {
   [[NSNotificationCenter defaultCenter] postNotificationName:RCTRemoteNotificationReceived
@@ -158,6 +171,17 @@ RCT_EXPORT_MODULE()
   [self sendEventWithName:@"remoteNotificationsRegistered" body:notification.userInfo];
 }
 
+- (void)handleRemoteNotificationRegistrationError:(NSNotification *)notification
+{
+  NSError *error = notification.userInfo[@"error"];
+  NSDictionary *errorDetails = @{
+    @"message": error.localizedDescription,
+    @"code": @(error.code),
+    @"details": error.userInfo,
+  };
+  [self sendEventWithName:@"remoteNotificationRegistrationError" body:errorDetails];
+}
+
 - (void)handleRegisterUserNotificationSettings:(NSNotification *)notification
 {
   if (_requestPermissionsResolveBlock == nil) {