Describe the feature:
As a cybersecurity analyst investigating an alert in Kibana, I would like to be able to see all alerts, no matter their state. Today I am presented with Open alerts but then can switch to Acknowledged and Closed but cannot select an option to see all alerts. This forces me to go to each filter type and change the Alert state to a common one to see them in one view.

Describe a specific use case for the feature:
If I were to be investigating an alert in Kibana I may see only 2 open alerts but 30 may have been closed by another analyst or acknowledged and I wouldn't know it unless I manually check each filter every time.