Fix Global Events and Screen Events do not work after iPhoneX patch (#1668)

* fix navigatorStyle don't work on Drawer

* Fix lightbox dismiss on Android

* Update LightBox.java

* Add splash screen tut in third party lib support list

* Revert the old drawer commit

* Fix screen events

ios/RCCViewController.m

 }
 
 - (void)sendScreenChangedEvent:(NSString *)eventName {
-    if ([self.view isKindOfClass:[RCTRootView class]]) {
-        
-        RCTRootView *rootView = (RCTRootView *)self.view;
+    if (self.rootView != nil) {
+        RCTRootView *rootView = self.rootView;
         
         if (rootView.appProperties && rootView.appProperties[@"navigatorEventID"]) {
             
 }
 
 - (void)sendGlobalScreenEvent:(NSString *)eventName endTimestampString:(NSString *)endTimestampStr shouldReset:(BOOL)shouldReset {
-    if ([self.view isKindOfClass:[RCTRootView class]]){
-        NSString *screenName = [((RCTRootView*)self.view) moduleName];
+    if (self.rootView != nil){
+        RCTRootView *rootView = self.rootView;
+        NSString *screenName = [rootView moduleName];
         
         [[[RCCManager sharedInstance] getBridge].eventDispatcher sendAppEventWithName:eventName body:@
          {