Fix Frida set userdefaults command

[izmcm]

Using Frida 15.1.8 I noticed that ObjC.classes.NSUserDefaults hasn't setObject_forKey_ method and userDefaultsClass.setObject_forKey_(true, 'isProVersion'); is returning

Error: expected a pointer
    at m (<input>:1)

Instead of this, I'm using

var userDefaultsClass = ObjC.classes.NSUserDefaults.standardUserDefaults();
userDefaultsClass.setObject_forKey_('YES', 'isProVersion');

and it is working as expected!