Describe the bug
Tags from --default-tags argument don't get applied to previously created "backend" security group.

Steps to reproduce

1. Deploy chart with minimal config.
2. Create at least 1 ALB Ingress.
3. Update chart, providing defaultTags option.
4. Observe default tags only on frontend security group.

Expected outcome
Both frontend and backend security groups get provided tags.

Environment

• AWS Load Balancer controller version: v2.4.4
• EKS version: v1.23.10-eks-15b7512

Additional Context:
n/a