Rollup merge of #143798 - Shourya742:2025-07-11-remove-format-short-command-trait, r=Kobzol

Remove format short command trait

Since we no longer have traces of the vanilla command, and we're already implementing format_short_command for CommandFingerprint, we can use it directly from the fingerprint. This PR removes the standalone format_short_command trait and moves its implementation under CommandFingerprint.

Author: fmease