Convert TwoFactorForm to gov uk frontend

app/templates/views/user-profile/confirm.html

@@ -21,11 +21,11 @@
         We’ve sent a security code to your new {{ thing }}.
       </p>
       {% call form_wrapper() %}
-        {{ textbox(
-          form_field,
-          width='5em',
-          autofocus=True
-        ) }}
+        {{ form_field(param_extensions={
+            "classes": "govuk-input govuk-input--width-5",
+            "attributes": {"data-module": "autofocus"}
+        }) }}
+
         {{ page_footer('Confirm') }}
       {% endcall %}
     </div>