Stronger warning message (displays related dashboards) when deleting a data source

[kenelm-ng]

When deleting a data source, there is only a confirmation box saying "Are you sure you want to delete the "XYZ" data source?".
To avoid users delete data sources and invalidate dashboards, a stronger warning message can be display in the confirmation box listing all the dashboards currently using the data source.
This should further lower the chance of users accidentally delete a data source.

[gelicia]

Hello, as you may have heard, we are transitioning away from using discussions to discuss feature requests. We are migrating this discussion to an issue and closing the discussion. The issue is #82818. Feel free to continue the discussion around this there. Thank you!