Add missing updates to instance.updatedAt

Fix instances not properly updating their status to unassigned and
unknown due to the updatedAt field not being updated with the current
timestamp.

packages/controller/src/Controller.ts

@@ -937,6 +937,7 @@ export default class Controller {
 			);
 		} else {
 			instance.status = "unassigned";
+			instance.updatedAt = Date.now();
 			this.instanceDetailsUpdated([instance]);
 		}
 	}