Classes that override toString with additional arguments break the toString of Frida

[yotamN]

For example, the class android.icu.text.UTF16 override the toString method privately with an implementation that requires an integer: https://android.googlesource.com/platform/external/icu/+/2ae1300/android_icu4j/src/main/java/android/icu/text/UTF16.java#2708

The parent method is not find because when we call toString it only iterates on the current class. Of course, we could access the parent but we already have a patch for toString on non instance classes to make it easier: https://github.com/frida/frida-java-bridge/blob/main/lib/class-factory.js#L1402

I think we should do that same for this use case