Fix popGesture freezes the app, Closes #4388 (#5009)

lib/ios/InteractivePopGestureDelegate.h

-//
-//  InteractivePopGestureDelegate.h
-//  ReactNativeNavigation
-//
-//  Created by Arman Dezfuli-Arjomandi on 1/10/19.
-//  Copyright © 2019 Wix. All rights reserved.
-//
-//
-
-// This file is adapted from the following StackOverflow answer:
-// https://stackoverflow.com/questions/24710258/no-swipe-back-when-hiding-navigation-bar-in-uinavigationcontroller/41895151#41895151
 
 #import <UIKit/UIKit.h>
 

lib/ios/InteractivePopGestureDelegate.m

-//
-//  InteractivePopGestureDelegate.m
-//  ReactNativeNavigation
-//
-//  Created by Arman Dezfuli-Arjomandi on 1/10/19.
-//  Copyright © 2019 Wix. All rights reserved.
-//
 
 #import "InteractivePopGestureDelegate.h"
 
 @implementation InteractivePopGestureDelegate
 
 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
-	if (self.navigationController.navigationBarHidden && self.navigationController.viewControllers.count > 1) {
+	if (self.navigationController.viewControllers.count < 2) {
+		return NO;
+	} else if (self.navigationController.navigationBarHidden) {
 		return YES;
 	} else if (!self.navigationController.navigationBarHidden && self.originalDelegate == nil) {
 		return YES;
 	}
 }
 
-- (id)forwardingTargetForSelector:(SEL)aSelector {
-	return self.originalDelegate;
-}
-
 @end