allow sharing Service catalog portfolio with Organization node

### Name of the resource

AWS::ServiceCatalog::PortfolioShare

### Resource name

_No response_

### Description

I need to share the Portfolio with "Organization nodeShare with a node within your Organization". This can be done in the AWS Console.

### Other Details

_No response_

Start with the AWS::ServiceCatalog::PortfolioShare resource coverage entry and review how this repository tracks unsupported resource behavior. Confirm the expected support for sharing a portfolio with an Organization node and verify that the completed coverage matches the AWS Console capability.

Written by the indexing model from the issue text.