[AWS::Grafana::Workspace] - [Coverage] - ipAddressType property not supported (present in CreateWorkspace API)

### Name of the resource

AWS::Grafana::Workspace

### Resource name

AWS::Grafana::Workspace

### Description

The CreateWorkspace API accepts networkAccessControl today and a workspace IP-version selection via ipAddressType (IPv4 | DUAL_STACK) to enable IPv6/dual-stack access to the workspace endpoint. AWS::Grafana::Workspace has no equivalent property, so dual-stack workspaces cannot be provisioned through CloudFormation.

API reference: https://docs.aws.amazon.com/grafana/latest/APIReference/API_CreateWorkspace.html (ipAddressType)
CFN resource reference (property absent): https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-resource-grafana-workspace.html

### Other Details

_No response_

Start by comparing the CreateWorkspace API reference with the AWS::Grafana::Workspace CloudFormation resource reference, focusing on ipAddressType and its IPv4 and DUAL_STACK values. Done means the CloudFormation resource supports this property and can provision the corresponding workspace configuration.

Written by the indexing model from the issue text.