avm2: All elements in an Array should be enumerable

[Bale001]

The current code does not work in Ruffle:

var a = [1, 2, 3, 4, 5];
for each(var i in a) {
    trace(i)
}

Because the elements in the Array are not enumerable. Array objects should have a custom get_enumerant_name and property_is_enumerable implementation to support this.

[danielhjacobs]

This was fixed #5447, correct?

[Bale001]

This was fixed #5447, correct?

Yup