fix over-count for anonymous uploads

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: sandboxcoder

profile-long-calls/long-calls-analyzer.ts

@@ -332,13 +332,14 @@ function printStats(db: DatabaseType): void {
       SELECT
         lc.call_name,
         COUNT(*)                          AS occurrences,
-        COUNT(DISTINCT lc.source_id)      AS affected_users,
+        COUNT(DISTINCT s.username)        AS affected_users,
         ROUND(AVG(lc.total_ms))           AS avg_ms,
         p95.p95_ms,
         MAX(lc.total_ms)                  AS max_ms,
         SUM(lc.is_freeze)                 AS freezes,
         ROUND(SUM(lc.total_ms) / 1000.0, 1) AS total_sec
       FROM long_calls lc
+      LEFT JOIN sources s ON s.id = lc.source_id
       LEFT JOIN p95 ON p95.call_name = lc.call_name
       GROUP BY lc.call_name
       ORDER BY total_sec DESC