Following on from T289086: Allow iOS/macOS/iPadOS to autofill 2fa codes, we should improve/set the autocomplete values for usernames and passwords on the Login and signup forms
Use the following autocomplete attribute values:
| Credential | Autocomplete Values |
|---|---|
| User Name | username |
| Password | current-password |
| New Password | new-password |
| One-Time Code | one-time-code |
See also: https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/autocomplete

