AWS Classic load balancer has deletion protection disabled. This may lead to accidental deletion of the load balancer.
In AWS Console -
In Terraform -
References:
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/application-load-balancers.html#deletion-protection
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/lb#enable_cross_zone_load_balancing