Users can't silence alerts from the dev console

When logged in as a non-admin user, I can't silence alerts from the Dev Console.

4.10 but the same issue may exist for previous versions.

1. Login to the dev console as a non-admin user. 
2. Follow the OCP documentation to deploy the example application including the service monitor and the rule (the user needs to be granted the monitoring-edit role). See https://docs.openshift.com/container-platform/4.9/monitoring/enabling-monitoring-for-user-defined-projects.html for details. 
3. Go to the Observe > Alerts page and disable notifications during 30 minutes for the VersionAlert alert. 

The alert notification seems to be disabled but on refresh, the notification is still enabled.

The notification is permanently disabled.

The console backend hits the wrong service which results in a 403 response code, it should use the tenancy-aware service.