[EKS] [request]: deleting Fargate profile should respect pod disruption budgets (PDBs)

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**Tell us about your request**
Deleting a Fargate profile immediately terminates all pods that are running with this profile. Instead, it should respect PDBs.

**Which service(s) is this request for?**
EKS, Fargate

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
We want to manage Fargate profiles with Configuration as Code. As Fargate profiles cannot be updated in-place (subnets, namespace and label selector), we need to create new ones and delete the old ones in order to update them. Deleting profiles does not respect PDBs and immediately terminates all pods running with the profile. Also, it's not clear which profile will be chosen if multiple profiles match, so it's not really possible to "drain" a profile gracefully before deleting it.

Also, the documentation doesn't state if the profile deletion is graceful for the pods (i.e. it respects the `terminationGracePeriodSeconds`). Can someone answer this question? If it respects it, what's the maximum value before pods are forcefully terminated?

Start with the EKS Fargate profile deletion behavior and the Kubernetes PDB and terminationGracePeriodSeconds semantics described in the issue. Confirm whether deletion drains pods gracefully, how multiple matching profiles are selected, and the maximum termination grace period; done means the behavior respects PDBs or the documentation clearly states the limits.

Written by the indexing model from the issue text.