CollectionAssociation.setAttributes Mutates Existing Records

```javascript
const model = new Model({parents: [{id: 1, name: 'Alpha'}]})
const p1 = await model.parents.first()

p1.id >> 1
p1.name >> Alpha

model.parents.setAttributes([
    {id: 2, name: 'Bravo'},
    {id: 1, name: 'Alpha'}
])

p1.id >> 2
p1.name >> Bravo
```

Failing Test is in branch