Fix PHP test app server configuration for React SPA static file serving

Co-authored-by: kobenguyent <[email protected]>

Author: Copilot

package.json

@@ -55,7 +55,7 @@
     "test:appium-other": "mocha test/helper/Appium_test.js --grep 'second'",
     "test:ios:appium-quick": "mocha test/helper/Appium_ios_test.js --grep 'quick'",
     "test:ios:appium-other": "mocha test/helper/Appium_ios_test.js --grep 'second'",
-    "test-app:start": "php -S 127.0.0.1:8000 -t test/data/app",
+    "test-app:start": "php -S 127.0.0.1:8000 -t test/data/app test/data/app/index.php",
     "test-app:stop": "kill -9 $(lsof -t -i:8000)",
     "test:unit:webbapi:playwright": "mocha test/helper/Playwright_test.js",
     "test:unit:webbapi:puppeteer": "mocha test/helper/Puppeteer_test.js",