Update navigatorStyle when toggling BottomTabs

When toggleTabs was called, the visibility state of the BottomTabs
was not persisted. There for, when pushing a screen and popping
the BottomTabs visibility state was set to the value of bottomTabsHidden
from navigatorStyle.

android/app/src/main/java/com/reactnativenavigation/layouts/BottomTabsLayout.java

@@ -179,6 +179,7 @@ public class BottomTabsLayout extends BaseLayout implements AHBottomNavigation.O
     }
 
     public void setBottomTabsVisible(boolean hidden, boolean animated) {
+        getCurrentScreenStack().peek().updateBottomTabsVisibility(hidden);
         bottomTabs.setVisibility(hidden, animated);
     }
 

android/app/src/main/java/com/reactnativenavigation/screens/Screen.java

@@ -115,6 +115,10 @@ public abstract class Screen extends RelativeLayout implements Subscriber {
         }
     }
 
+    public void updateBottomTabsVisibility(boolean hidden) {
+        styleParams.bottomTabsHidden = hidden;
+    }
+
     private void createViews() {
         createAndAddTopBar();
         createTitleBar();