Changing length of "User Password" field does not change length of "Password" field

### Reproduction Steps

1. In the Register form (LifterLMS > Forms), click on the Password (Reusable), click the ... on the right, then select "Detach"
2. Click on the "User Password" (Password) block
3. Change minimum password length to "6"
4. Save the form
5. View the registration form on the front-end (either enable Open Registration in Settings, "Accounts" tab or the shortcode/block)

### Expected Behavior

The `minlength` is "6" for both the Password and Confirm Password inputs

### Actual Behavior

Confirm password minlength is still `8`