disable flaky test

e2e/StaticLifecycleEvents.test.js

     await expect(elementByLabel('componentDidDisappear | navigation.playground.WelcomeScreen')).toBeVisible();
   });
 
-  it('unmounts when dismissed', async () => {
+  it(':ios: unmounts when dismissed', async () => {
     await elementById(testIDs.PUSH_STATIC_LIFECYCLE_BUTTON).tap();
     await expect(elementByLabel('Static Lifecycle Events Overlay')).toBeVisible();
     await elementById(testIDs.DISMISS_BUTTON).tap();