Trigger apple.yml on examples/demo-apps/apple only

So we won't trigger it on Android changes 

Pull Request resolved: #5018

Author: kirklandsign

.github/workflows/apple.yml

@@ -15,7 +15,7 @@ on:
       - build/build_apple_frameworks.sh
       - build/create_frameworks.sh
       - build/test_ios_ci.sh
-      - examples/demo-apps/**
+      - examples/demo-apps/apple/**
       - extension/apple/**
       - extension/module/**
   workflow_dispatch: