Android: Disable debug menu when monkey is running

Summary:
When testing an app on Android using the monkey, the monkey shouldn't be able to open or interact with the dev menu.

**Test plan (required)**

My team uses this change in our app.

Adam Comella
Microsoft Corp.
Closes #10901

Differential Revision: D4176167

Pulled By: ericvicenti

fbshipit-source-id: 8eb64715ae7496cdf957ee963777f66ab358546c

ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerImpl.java

@@ -22,6 +22,7 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
+import android.app.ActivityManager;
 import android.app.AlertDialog;
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -334,7 +335,7 @@ public void run() {
 
   @Override
   public void showDevOptionsDialog() {
-    if (mDevOptionsDialog != null || !mIsDevSupportEnabled) {
+    if (mDevOptionsDialog != null || !mIsDevSupportEnabled || ActivityManager.isUserAMonkey()) {
       return;
     }
     LinkedHashMap<String, DevOptionHandler> options = new LinkedHashMap<>();