Fix static lifecycle events e2e on iOS

Now iOS e2e is legitimately broken :)

e2e/StaticLifecycleEvents.test.js

 
   it.skip('didAppear didDisappear', async () => {
     await elementById(testIDs.PUSH_STATIC_LIFECYCLE_BUTTON).tap();
-    await expect(elementByLabel('Static Lifecycle Events')).toBeVisible();
+    await expect(elementByLabel('Static Lifecycle Events Overlay')).toBeVisible();
     await expect(elementByLabel('didAppear | navigation.playground.StaticLifecycleOverlay')).toBeVisible();
     await elementByLabel('PUSH').tap();
     await expect(elementByLabel('didAppear | navigation.playground.PushedScreen')).toBeVisible();

playground/src/screens/StaticLifecycleOverlay.js

       ));
     return (
       <View style={styles.root}>
-        <Text style={styles.h1}>{`Static Lifecycle Events`}</Text>
+        <Text style={styles.h1}>{`Static Lifecycle Events Overlay`}</Text>
         <View style={styles.events}>
           {events}
         </View>