fix: enable landscape orientation in expo-example

Author: mfazekas

expo-example/app.json

@@ -3,7 +3,7 @@
     "name": "expo-example",
     "slug": "expo-example",
     "version": "1.0.0",
-    "orientation": "portrait",
+    "orientation": "default",
     "icon": "./assets/images/icon.png",
     "scheme": "expoexample",
     "userInterfaceStyle": "automatic",