Copilot Stats Tweaks

[SanderGi]

Task1 (fixes keyerror with sorting options): https://app.asana.com/0/1203067047205953/1206421218668399
Sentry Error: https://dara-network.sentry.io/issues/4912709228/?project=4504338635423744&query=is%3Aunresolved+stats&referrer=issue-stream&statsPeriod=14d&stream_index=0

Task2 (average response time): https://app.asana.com/0/1203067047205953/1206454589859297

Q/A checklist

• Do a code review of the changes
• Add any new dependencies to poetry & export to requirementst.txt (poetry export -o requirements.txt)
• Carefully think about the stuff that might break because of this change
• The relevant pages still run when you press submit
• If you added new settings / knobs, the values get saved if you save it on the UI
• The API for those pages still work (API tab)
• The public API interface doesn't change if you didn't want it to (check API tab > docs page)
• Do your UI changes (if applicable) look acceptable on mobile?

[SanderGi]

We don't even store the run_time on the run, so I've given up on fixing past data. A new response_time field has been added on Message instead as discussed