updateRecursive and safeUpdateRecursive cannot contain CollectionOfJsonModels in path

[jwadhams]

Both \Carsdotcom\LaravelJsonModel\JsonModel::updateRecursive and \Carsdotcom\LaravelJsonModel\JsonModel::safeUpdateRecursive correctly descend into JsonModels with JsonModel attributes, but can't transit through a CollectionOfJsonModels. If you're trying to update one property on one collection member, the entire collection member is overwritten instead.

Smart money might be to expose a common interface like SupportsUpdateRecursive that those methods detect, then implement that method on CollectionOfJsonModels. That's the approach we took with CanCascadeEvents