observability-dashboard-metrics-ag-dashboard-widget-for-unique-user-ids-count-returns-2652ea77

THEN Fix the query builder's translateAggregation to avoid wrapping distinct metrics in an additional count(). Instead, use the metric's sql directly (e.g., uniq(traces.user_id)) for count aggregations. This ensures unique user IDs are counted correctly, not the total number of traces. The patch is implemented by adjusting the 'count' case to skip aggregation when the metric already uses uniq().

// Before: translateAggregation for 'count' returned `count(${metric.alias || metric.sql})`
// After: handle distinct metrics separately, e.g. if metric.sql starts with 'uniq' then use metric.sql directly
case 'count':
  return metric.sql?.startsWith('uniq') ? metric.sql : `count(${metric.alias || metric.sql})`;