Has-many relationship propagates 'messages' property but not 'errors' property

[BlueRaja]

Environment

• Ember Version: 3.16
• Ember CLI Version: 3.16?
• Ember CP Validations Version: 4.0.0-beta.10

Steps to Reproduce

Here is our setup, with doubly-nested classes. It might reproduce with only a single layer of nesting, though:

outerClass:

buildValidations({
  middleClass: validator('has-many'),
});

middleClass:

buildValidations({
  innerClass: validator('has-many'),
});

innerClass:

buildValidations({
    value: validator('presence', { presence: true }),
});

---

Here is what the data looks like:

///////////////////////////////////
// outerClass validations
///////////////////////////////////
this.get('outerClass.validations.isValid')
> false

this.get('outerClass.validations.messages')
> ["This field can't be blank"]

this.get('outerClass.validations.errors')
> []

///////////////////////////////////
// Access middleClass through validations.attrs
///////////////////////////////////
this.get('outerClass.validations.attrs.middleClass.isValid')
> false

this.get('outerClass.validations.attrs.middleClass.messages')
> ["This field can't be blank"]

this.get('outerClass.validations.attrs.middleClass.message')
> "This field can't be blank"

this.get('outerClass.validations.attrs.middleClass.errors')
> []

this.get('outerClass.validations.attrs.middleClass.error')
> undefined

///////////////////////////////////
// Access middleClass directly:
///////////////////////////////////
this.get('outerClass.middleClass.0.validations.messages')
> ["This field can't be blank"]

this.get('outerClass.middleClass.0.validations.errors')
> []

///////////////////////////////////
// Access innerClass through middleClass.validations.attrs
///////////////////////////////////
this.get('outerClass.middleClass.0.validations.attrs.innerClass.messages')
> ["This field can't be blank"]

this.get('outerClass.middleClass.0.validations.attrs.innerClass.errors')
> []

///////////////////////////////////
// Access innerClass directly
///////////////////////////////////
this.get('outerClass.middleClass.0.innerClass.0.validations.messages')
> ["This field can't be blank"]

this.get('outerClass.middleClass.0.innerClass.0.validations.errors')
> [Class]

As you can see, the innerClass has an error on it, but the hasMany is not propagating it.

Based on the documentation, it shouldn't be possible for errors to be empty but messages non-empty. In fact, based on (what I assume is) the code, it looks like error shouldn't ever be undefined