Update checkbox third party offers to be Pajamas compliant

Changelog: changed

app/views/admin/application_settings/_third_party_offers.html.haml

@@ -8,13 +8,12 @@
     %p
       = _('Control whether to display customer experience improvement content and third-party offers in GitLab.')
   .settings-content
-    = form_for @application_setting, url: general_admin_application_settings_path(anchor: 'js-third-party-offers-settings'), html: { class: 'fieldset-form', id: 'third-party-offers-settings' } do |f|
+    = gitlab_ui_form_for @application_setting, url: general_admin_application_settings_path(anchor: 'js-third-party-offers-settings'), html: { class: 'fieldset-form', id: 'third-party-offers-settings' } do |f|
       = form_errors(@application_setting) if expanded
 
       %fieldset
         .form-group
-          .form-check
-            = f.check_box :hide_third_party_offers, class: 'form-check-input'
-            = f.label :hide_third_party_offers, _('Do not display content for customer experience improvement and offers from third parties'), class: 'form-check-label'
+          = f.gitlab_ui_checkbox_component :hide_third_party_offers,
+          _('Do not display content for customer experience improvement and offers from third parties')
 
       = f.submit _('Save changes'), class: "gl-button btn btn-confirm"