Array validation errors should update specific input with invalid state

[jobara]

Is your feature request related to a problem?

When validating arrays of values, the error validation will be keyed with the array index that failed validation. For example, a set of checkbox values with the name toValidate[] might return an error as toValidate.0. In that case it'd be good to only mark the first checkbox as aria-invalid, rather than all of the checkboxes.

Describe the solution you'd like

For validation that indicates a specific input in a group of inputs, only that specific input should be marked as aria-invalid.

Additional context or notes

Related to #149