Set BottomTabs visibility before initial screen is created

closes #2143

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

     }
 
     private void showInitialScreenStack() {
-        showStackAndUpdateStyle(screenStacks[0], NavigationType.InitialScreen);
+        bottomTabs.setVisibilityByInitialScreen(getInitialScreenStack().peek().getStyleParams());
+        showStackAndUpdateStyle(getInitialScreenStack(), NavigationType.InitialScreen);
         EventBus.instance.post(new ScreenChangedEvent(screenStacks[0].peek().getScreenParams()));
     }
 
+    private ScreenStack getInitialScreenStack() {
+        return screenStacks[AppStyle.appStyle.bottomTabsInitialIndex];
+    }
+
     @Override
     public View asView() {
         return this;

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

         return false;
     }
 
+    public void setVisibilityByInitialScreen(StyleParams styleParams) {
+        setVisibility(styleParams.bottomTabsHidden, false);
+    }
+
     public void setVisibility(boolean hidden, boolean animated) {
         if (visibilityAnimator != null) {
             visibilityAnimator.setVisible(!hidden, animated, null);