observability-dashboard-metric-agg-dashboard-widget-for-unique-user-ids-or-unique-ses-e28d74c1

THEN In the Langfuse query builder (web/src/features/query/server/queryBuilder.ts), change the `count` aggregation case from `count(${metric.alias || metric.sql})` to `count(${metric.sql})` to ensure the underlying SQL expression (e.g., `uniq(traces.user_id)`) is used directly instead of an alias string. This fix prevents the count aggregation from incorrectly returning the row count. Upgrade to a version that includes this fix or apply the patch manually.

// Before (buggy):
case "count":
  return `count(${metric.alias || metric.sql})`;
// After (fixed):
case "count":
  return `count(${metric.sql})`;