Moderator changes minor refactor

[jb3]

Refactors some items from #3339 and #3338.

• Use partial objects to avoid unnecessary API calls when tidying up infraction messages
  • I hadn't noticed the partial functions when I went on my hunt, I was working under the assumption I'd have to hook into the HTTP stuff or create my own partials, but this is much cleaner and cheaper.
• Don't tidy-up infractions outside mod channels (ensures that infractions issued by the bot automatically in mod-alerts stay as part of the context)
• Exclude the bot-commands channel from the !rule usage alerts.

[wookie184]

Looks good

[sentry]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ HTTPException: 400 Bad Request (error code: 50083)... in production

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