Fix a couple of missing display names in integration test components (#…

…29902)

Summary:
IntegtationTestsApp looks for a display name of each component to register it in the AppRegistry, along with show its name in the tests lists. Add the missing display names back to these tests.

## Changelog

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[iOS] [Fixed] - Fix a couple of missing display names in integration test components

Pull Request resolved: #29902

Test Plan: All integration tests now show up in the list.

Reviewed By: TheSavior

Differential Revision: D25998969

Pulled By: appden

fbshipit-source-id: 45e5544c8df60a67615b75d85195f3080a42a0b8

IntegrationTests/LayoutEventsTest.js

@@ -197,4 +197,5 @@ const styles = StyleSheet.create({
   },
 });
 
+LayoutEventsTest.displayName = 'LayoutEventsTest';
 module.exports = LayoutEventsTest;

IntegrationTests/TimersTest.js

@@ -267,4 +267,5 @@ const styles = StyleSheet.create({
   },
 });
 
+TimersTest.displayName = 'TimersTest';
 module.exports = TimersTest;