[BUG] validateOnChange prevents fields from being marked as dirty

[jhwheeler]

Describe the bug
When you pass validateOnChange: true to a field's options, the field is not marked dirty when you change its value.

To Reproduce
Steps to reproduce the behavior:

1. Create a field and set validateOnChange to false:

const emailField = field('email', '', [required(), email()], { validateOnChange: false })

2. Type in the field
3. dirty never changes from false to true

Expected behavior
The option validateOnChange should not affect the dirty check, only validation itself.