Feedback: Map SQL Activity using an Application Name

Page: https://cockroachlabs.com/docs/v25.2/map-sql-activity-to-app.html

## What is the reason for your feedback?

[ ] Missing the information I need

[ ] Too complicated

[ ] Out of date

[ ] Something is broken

[x] Other

## Additional details

This is great doc before we have improvements on UI. From discussion w/ Observabilities team, they recommend using crdb_internal.statement_statistics_persisted to reduce impact to production system, since crdb_internal.statement_statistics is in memory, while persisted is on disk. Could we update the doc to follow the recommendations? Thanks!

Jira issue: DOC-14296