pijul diff: Do not ignore the --untracked option in presence of --short.

Created by  FHRXP5Jnb2MWLDrPrnLnkN2ryWcGCo6CRr1dXR9FW2YA  on December 1, 2021
EWZ7VHV4N7QNK7GNG3FC6AQ6XVPH4ADJSUQADM7TZFYAD2AYNNTAC
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