With the updated ImageBuilder, our wsl composes now have their proper extention of .wsl

But, until we update to koji 1.36 (which isn't out yet) we need to manually add wsl as a type that koji knows about.

Without this change, koji builds the wsl images, but then fails them.

https://kojihub.stream.centos.org/koji/taskinfo?taskID=6002080

Please add wsl type to the CentOS Stream Koji.

References:

https://pagure.io/koji/issue/4425

https://gitlab.com/CentOS/infra/tracker/-/issues/1719