[FR] Hide closed/merged alerts in default Alerts view

[bvirgilioamnh]

Is your feature request related to a problem? Please describe.
Alerts that are Escalated or Closed still show up in the Alerts view making it difficult to decipher active alerts that need to be reviewed.

Describe the solution you'd like
An optimal solution would be to provide the ability to create a "default" filter that is applied (globally or per user). That filter is then just automatically applied unless another filter is selected.

I think this likely might be a challenge to implement as the current filtering implementation is very boolean and does not provide the ability to specify multiple alert status values, or use negative filters. Perhaps the GraphQL blueprint could/should be extended to Alerts?

Describe alternatives you've considered
A quick alternative would be to develop a series of browser bookmarks

Additional context
We have some automations that automatically close alerts via Shuffle, so not all alerts are manually reviewed by an individual making this a key quality of life feature..