Feedback: TTL Dashboard

Page: https://cockroachlabs.com/docs/v25.3/ui-ttl-dashboard.html

## What is the reason for your feedback?

[x] Missing the information I need

[ ] Too complicated

[ ] Out of date

[ ] Something is broken

[ ] Other

## Additional details
The current charts doesn't show how the dashboard look when there are TTL jobs running. All the metrics are zero and are not useful. Could we update the charts to show how it looks like in when we have ttl job set up?

Jira issue: DOC-14607