Stop legend duplication on disable-platform-admin

app/main/views/user_profile.py

@@ -209,12 +209,14 @@ def user_profile_disable_platform_admin_view():
         abort(403)
 
     form = ServiceOnOffSettingForm(
-        name="Signing in again clears this setting",
+        name="Use platform admin view",
         enabled=not session.get('disable_platform_admin_view'),
         truthy='Yes',
         falsey='No',
     )
 
+    form.enabled.param_extensions = {"hint": {"text": "Signing in again clears this setting"}}
+
     if form.validate_on_submit():
         session['disable_platform_admin_view'] = not form.enabled.data
         return redirect(url_for('.user_profile'))

app/templates/views/user-profile/disable-platform-admin-view.html

@@ -1,23 +1,32 @@
 {% extends "withoutnav_template.html" %}
 {% from "components/form.html" import form_wrapper %}
 {% from "components/page-footer.html" import page_footer %}
-{% from "components/page-header.html" import page_header %}
+{% from "components/back-link/macro.njk" import govukBackLink %}
+
+{% set page_title = 'Use platform admin view' %}
 
 {% block per_page_title %}
-  Use platform admin view
+  {{ page_title }}
 {% endblock %}
 
 {% block maincolumn_content %}
 
   <div class="govuk-grid-row">
     <div class="govuk-grid-column-five-sixths">
-      {{ page_header(
-        'Use platform admin view',
-        back_link=url_for('.user_profile')
-      ) }}
+      {{ govukBackLink({ "href": url_for('.user_profile') }) }}
 
-      {% call form_wrapper() %}
-        {{ form.enabled }}
+      {% call form_wrapper(class="govuk-!-margin-top-3") %}
+        {{ form.enabled(param_extensions={
+          'fieldset': {
+            'legend': {
+              'isPageHeading': True,
+              'classes': 'govuk-fieldset__legend--l'
+            }
+          },
+          'hint': {
+            'text': 'Signing in again clears this setting'
+          }
+        }) }}
         {{ page_footer('Save') }}
       {% endcall %}
     </div>