Intercept touch event only if ScrollView exists (#475)

android/app/src/main/java/com/reactnativenavigation/views/CollapsingContentView.java

 
     @Override
     public boolean dispatchTouchEvent(MotionEvent ev) {
-        if (scrollViewDelegate != null) {
+        if (scrollViewDelegate != null && scrollViewDelegate.hasScrollView()) {
             boolean consumed = scrollViewDelegate.didInterceptTouchEvent(ev);
             if (consumed) {
                 return true;