Missed matchAll-related features

[zloirock]

#24 adds changes to String#matchAll, but not to related methods. Maybe, in this case, makes sense remove handling non-global regexes from RegExp.prototype[@@matchAll], CreateRegExpStringIterator, %RegExpStringIteratorPrototype%.next() and simplify those methods?

[ljharb]

I don’t think that’s necessary or ideal. The string matchAll method, alone, is where the confusion lies with non-global regexes.