fix #10909 unnecessary ssh password/passphrase prompts

[m-wrzr]

Hey, this PR addresses this issue in the main dvc repository treeverse/dvc#10909

The main issue was, that no matter what ssh configuration you set, the passphrase for the key is always prompted, even if you use ask_password and password based auth.

This is due to the InteractiveSSHClient still trying to use the publickey auth if we don't set the preferred_auth, i.e. we will always call public_key_auth_requested.

I've tried to replicate this behavior by expanding the docker based ssh tests, please let me know if you need some additional details/tests/etc

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