IBC Eureka Forwarding

This issue is to enable the use of forwarding for IBC Eureka, represented pictorially below:

<img width="426" alt="Image" src="https://github.com/user-attachments/assets/af17ffaf-0bbb-4338-9efd-57f074299977" />

More context on forwarding can be found [in the requirements document](https://github.com/cosmos/ibc-go/blob/main/docs/requirements/path-unwinding-forwarding-requirements.md)