Description of problem:

  Custom alert created in user-defined namespace not get lister in notification tab if those are firing.   

How reproducible:

1. enable user-workload-monitoring 
2. create namespace 
3. Create a custom alert with the critical severity in the same namespace.  https://access.redhat.com/solutions/7104451
4. Create a pod with the wrong image so that the pod will not come running, which allows our alert to fire. 

Actual results:

    The alert after firing not get listed in notification tab. 

Expected results:

Alert shoud listed in notification tab.    

Alerts configured as AlertRule or PrometheusRule in the openshift-monitoring project appear in the Notifications tab. However, alert rules created in user-defined projects do not appear there.