Merge branch...

Merge branch '364910-migrate-form_errors-in-app-views-admin-application_settings-_repository_mirrors_form-html' into 'master'

Migrate `form_errors` in repository mirroring to Pajamas alert

See merge request !91257

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

 = gitlab_ui_form_for @application_setting, url: repository_admin_application_settings_path(anchor: 'js-mirror-settings') do |f|
-  = form_errors(@application_setting)
+  = form_errors(@application_setting, pajamas_alert: true)
 
   %fieldset
     .form-group