fix: update backfill export query to include transactions in todo, should_retry and failed status (#603)

* fix: update backfill export script to include transactions in pending, todo, should_retry status

* updates

* updates

Author: kenvora

charts/langsmith/scripts/support_queries/postgres/pg_usage_traces_backfill_export.sql

@@ -1,4 +1,4 @@
--- This query exports all pending trace count transactions
+-- This query exports all unreported trace count transactions
 -- for local sources. It also sets backfill_id to a common random UUID for tracking
 -- and sets backfilled_at to the current timestamp.
 
@@ -12,7 +12,7 @@ backfill_txns AS (
   SET backfill_id = backfill_info.backfill_id,
       backfilled_at = backfill_info.backfilled_at
   FROM backfill_info
-  WHERE tc.status = 'pending'
+  WHERE tc.status IN ('pending', 'todo', 'should_retry', 'failed')
     AND tc.source = 'local'
   RETURNING *
 )