Fix not displaying view in navigation (#252)

fixes #208

For stack overriding reactSetFrame for active does nothing because active is always NO, so there's no regression.

But it fixes in other cases (like stack navigation - not native one).

ios/RNSScreen.m

@@ -33,6 +33,9 @@ - (instancetype)initWithBridge:(RCTBridge *)bridge
 
 - (void)reactSetFrame:(CGRect)frame
 {
+  if (_active) {
+    [super reactSetFrame:frame];
+  }
   // ignore setFrame call from react, the frame of this view
   // is controlled by the UIViewController it is contained in
 }