[LOCAL] fix e2e local testing script post metro-config

scripts/testing-utils.js

@@ -97,11 +97,9 @@ function isPackagerRunning(
 }
 
 // this is a very limited implementation of how this should work
-// literally, this is macos only
-// a more robust implementation can be found here:
-// https://github.com/react-native-community/cli/blob/7c003f2b1d9d80ec5c167614ba533a004272c685/packages/cli-platform-android/src/commands/runAndroid/index.ts#L195
-function launchPackagerInSeparateWindow() {
-  exec("open -a 'Terminal' ./packages/react-native/scripts/packager.sh");
+function launchPackagerInSeparateWindow(folderPath) {
+  const command = `tell application "Terminal" to do script "cd ${folderPath} && yarn start"`;
+  exec(`osascript -e '${command}'`);
 }
 
 module.exports = {