Configure alert to send resolved messages

[gelicia]

Discussed in https://github.com/grafana/grafana/discussions/65564

^{Originally posted by vikram0602 March 29, 2023} Is there a way to configure alert to enable or disable triggering resolved messages. So for example we want to send resolve messages for some alerts but not for all alerts.

I see you can enable triggering resolved messages on contact points but would be great to set that on alert itself.