Rename `DiagnosticsCommand` to `DiagnosticsSlashCommand` (#13795)
This PR renames the `DiagnosticsCommand` to `DiagnosticsSlashCommand` to
match the rest of our slash commands.
Release Notes:
- N/A
05af87e416Marshall Bowers committed on 7/3/2024, 9:17:02 PM· committed by GitHubparent75d2e04