Fix React DevTools compatibility for the example app (#3197)

Summary:
Currently, it fails with
```
Uncaught Error: Unsupported Bridge operation "0"
```
Closes #3197

Fixed by following the guide at https://gist.github.com/bvaughn/4bc90775530873fdf8e7ade4a039e579?permalink_comment_id=4056267#flipper

Reviewed By: lblasa

Differential Revision: D34721401

fbshipit-source-id: adc4d46a0dbdd67b86753fe1ac0deb3046113b6d

react-native/ReactNativeFlipperExample/package.json

@@ -28,5 +28,8 @@
   },
   "relativeDependencies": {
     "react-native-flipper": "../react-native-flipper"
+  },
+  "resolutions": {
+    "react-devtools-core": "4.23.0"
   }
 }