Felte setData error repo

This project shows a problem in felte validation when using setData on array fields where the errors are not properly updated.

Reproduction

1. yarn install
2. yarn dev
3. Click "add Interest"
4. type in a into the new input field

Expected

errors should show an error in items[0].title

Actual

errors is still `items: [{title: null}]

More context

The problem is that we dont use a native input field to set the form data but instead use setData to update the form.

The validator is called and does indeed set

{
    "email": [
        "Must not be empty",
        "Must be a valid email"
    ],
    "items": [
        {
            "title": [
                "title 0 must have length >= 2"
            ]
        }
    ]
}

but the new validation error object never shows up in the $errors store from felte.