[EKS] [request]: Ability to specify "volume type" when provisioning Managed worker nodes from EKS console.

### Community Note

* Please vote on this issue by adding a 👍 [reaction](https://blog.github.com/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/) to the original issue to help the community and maintainers prioritize this request
* Please do not leave "+1" or "me too" comments, they generate extra noise for issue followers and do not help prioritize the request
* If you are interested in working on this issue or have submitted a pull request, please leave a comment

**Tell us about your request**
Add the ability to specify "volume type" for Managed worker nodes, when provisioning Managed nodes from the EKS Console

OR

Enable "gp3" as the default volume type for EKS Managed worker nodes. This is the default volume type when managed nodes are created using "eksctl"

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

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
What outcome are you trying to achieve, ultimately, and why is it hard/impossible to do right now? What is the impact of not having this problem solved? The more details you can provide, the better we'll be able to understand and solve the problem.

Currently, by default, only volumes with "gp2" volume type are provisioned for Managed worker nodes when we create a managed node group from the EKS Console. There is no way to specify volume type parameter.

However, when we provision managed nodes with "eksctl", volumes with "gp3" volume type are provisioned for worker nodes by default.

**Are you currently working around this issue?**
How are you currently solving this problem?
1. Either provision Managed nodes with "eksctl"
2. Manually update the volume type for each worker node.

**Additional context**
Anything else we should know?
Reference:
https://github.com/weaveworks/eksctl/issues/2891

Specifically:
https://github.com/weaveworks/eksctl/issues/2891#issuecomment-762781121

**Attachments**
If you think you might have additional information that you'd like to include via an attachment, please do - we'll take a look. (Remember to remove any personally-identifiable information.)

Review the EKS Console managed worker-node provisioning flow and the referenced eksctl issue. Determine where volume type is selected or defaulted, then define completion as allowing a managed node group to choose gp2 or gp3, or consistently using gp3 as the default.

Written by the indexing model from the issue text.