Merge branch '294202-updated-at' into 'master'

Resolve "Issue changes with updated_at not properly respected"

See merge request gitlab-org/gitlab!50272

app/services/resource_events/change_state_service.rb

@@ -19,7 +19,7 @@ module ResourceEvents
         state: ResourceStateEvent.states[state],
         close_after_error_tracking_resolve: close_after_error_tracking_resolve,
         close_auto_resolve_prometheus_alert: close_auto_resolve_prometheus_alert,
-        created_at: Time.zone.now
+        created_at: resource.system_note_timestamp
       )
 
       resource.expire_note_etag_cache

changelogs/unreleased/294202-updated-at.yml

+---
+title: Persist updated_at value in state change events
+merge_request: 50272
+author:
+type: fixed

spec/services/resource_events/change_state_service_spec.rb

@@ -30,6 +30,15 @@ RSpec.describe ResourceEvents::ChangeStateService do
 
         expect_event_source(event, source)
       end
+
+      it "sets the created_at timestamp from the system_note_timestamp" do
+        resource.system_note_timestamp = Time.at(43).utc
+
+        described_class.new(user: user, resource: resource).execute(status: state, mentionable_source: source)
+        event = resource.resource_state_events.last
+
+        expect(event.created_at).to eq(Time.at(43).utc)
+      end
     end
   end