feat: add a getComponent prop to lazily specify components

example/src/Screens/CompatAPI.tsx

@@ -127,8 +127,8 @@ const CompatStack = createCompatStackNavigator<
         StackNavigationProp<NestedStackParams>
       >(
         {
-          Feed: FeedScreen,
-          Article: ArticleScreen,
+          Feed: { getScreen: () => FeedScreen },
+          Article: { getScreen: () => ArticleScreen },
         },
         { navigationOptions: { headerShown: false } }
       ),

example/src/index.tsx

@@ -362,7 +362,7 @@ export default function App() {
                     <Stack.Screen
                       key={name}
                       name={name}
-                      component={SCREENS[name].component}
+                      getComponent={() => SCREENS[name].component}
                       options={{ title: SCREENS[name].title }}
                     />
                   )