Migrate prometheus alert to Pajamas::AlertComponent

- https://gitlab.com/gitlab-org/gitlab/-/merge_requests/84345

app/views/projects/services/prometheus/_top.html.haml

@@ -2,8 +2,7 @@
 
 .row
   .col-lg-12
-    .gl-alert.gl-alert-info{ role: 'alert' }
-      = sprite_icon('information-o', css_class: 'gl-icon gl-alert-icon gl-alert-icon-no-title')
+    = render Pajamas::AlertComponent.new(dismissible: false) do
       .gl-alert-body
         = s_('AlertSettings|You can now set up alert endpoints for manually configured Prometheus instances in the Alerts section on the Operations settings page. Alert endpoint fields on this page have been deprecated.')
       .gl-alert-actions