Fix E2E test script when the ci flag is not specified (#52617)

Summary:

The `test-release-local` script was failing to execute the npx rreact-native run-ios command for some issues with cocoapods.
That command tries to reinstall the pods so there might be some issues when testing.

As an alternative, we can avoid duplicated work by dropping the npx react-native command and, instead, build the app with xcodebuild and install it in the simulator with xcrun.

This is a backport of [this PR](#52609)

## Changelog:
[Internal] -

Reviewed By: vzaidman

Differential Revision: D78344397

Author: cipolleschi

scripts/release-testing/test-release-local.js

@@ -113,19 +113,26 @@ async function testRNTesterIOS(
 
     // install app on device
     exec(`xcrun simctl install booted ${appOutputFolder}`);
-
-    // launch the app on iOS simulator
-    exec('xcrun simctl launch booted com.meta.RNTester.localDevelopment');
   } else {
     exec(
       `USE_HERMES=1 CI=${onReleaseBranch.toString()} RCT_NEW_ARCH_ENABLED=1 bundle exec pod install --ansi`,
     );
 
-    // launch the app on iOS simulator
+    // build the app on iOS simulator
+    exec(
+      'xcodebuild -workspace RNTesterPods.xcworkspace -scheme RNTester -sdk "iphonesimulator" -destination "generic/platform=iOS Simulator" -derivedDataPath "/tmp/RNTesterBuild"',
+    );
+    // boot device
+    exec('xcrun simctl boot "iPhone 16 Pro"');
+    // install app on device
     exec(
-      'npx react-native run-ios --scheme RNTester --simulator "iPhone 15 Pro"',
+      'xcrun simctl install booted "/tmp/RNTesterBuild/Build/Products/Debug-iphonesimulator/RNTester.app"',
     );
+    // bring iOS simulator to the front
+    exec('open -a simulator');
   }
+  // launch the app on iOS simulator
+  exec('xcrun simctl launch booted com.meta.RNTester.localDevelopment');
 }
 
 /**