[BUG] Podman remote host requires docker CLI

When using remote Podman, `k3d` complains that the `docker` CLI is not available on the remote host. ## What did you do 1. followed [Using remote Podman](https://k3d.io/v5.8.3/usage/advanced/podman/#using-remote-podman) 2. `k3d cluster create` ## What did you expect to happen The cluster gets up properly ## Screenshots or terminal output `... command [ssh -o ConnectTimeout=30 -l {user_name} -p {port} -- {host} docker system dial-stdio] has exited with exit status 127, make sure the URL is valid, and Docker 18.09 or later is installed on the remote host: stderr=bash: line 1: docker: command not found` ## Which OS & Architecture Fedora Linux 42 (Cloud Edition) ## Which version of `k3d` 5.8.3 ## Which version of docker podman version 5.5.0 ## Possible solution Use the value of `DOCKER_SOCK` to determine the correct CLI on the remote host.