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kotlinlang

`Locale.setDefault` is blocked by security manager in playground. Is this on purpose?

```import java.util.Locale;

fun main() {
    Locale.setDefault(Locale("ar"))
}```
Exception:
```Exception in thread "main" java.security.AccessControlException: Access control exception due to security reasons in web playground: 
 access denied ("java.util.PropertyPermission" "user.language" "write")
 at java.lang.SecurityManager.checkPermission (:-1) ```