Autoscaling w/ Karpenter is not automatically configured in the hyperpod-create.sh script

The hyperpod-create.sh script at [Container-Root/hyperpod/impl/eks/hyperpod-create.sh](https://github.com/aws-samples/aws-do-hyperpod/blob/main/Container-Root/hyperpod/impl/eks/hyperpod-create.sh) does not automatically configure Karpenter for autoscaling as part of the HyperPod EKS cluster creation workflow. Users who want Karpenter-based autoscaling (the recommended approach for dynamic GPU node provisioning on EKS) must manually install and configure Karpenter separately after the cluster is created.