message: percy: Fix status-banner css
diff: <BsAlert
  @type={{stat.class}}
  @dismissible={{stat.dismiss}}
  - @classNames={{if stat.jumbo (local-class 'StatusBanner__jumbo')}}
  + class={{if stat.jumbo (local-class 'StatusBanner__jumbo')}}
  >
  <div class='{{if stat.jumbo 'jumbotron'}}'>
  <p data-test-status-message={{stat.id}}>{{t stat.id extra=stat.extra htmlSafe=true}}</p>
  