fix(workflow_run): sequence_number race. (#21228)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/core/repositories/sqlalchemy_workflow_execution_repository.py

@@ -6,7 +6,7 @@ import json
 import logging
 from typing import Optional, Union
 
-from sqlalchemy import func, select
+from sqlalchemy import select
 from sqlalchemy.engine import Engine
 from sqlalchemy.orm import sessionmaker
 
@@ -146,20 +146,7 @@ class SQLAlchemyWorkflowExecutionRepository(WorkflowExecutionRepository):
         db_model.workflow_id = domain_model.workflow_id
         db_model.triggered_from = self._triggered_from
 
-        # Check if this is a new record
-        with self._session_factory() as session:
-            existing = session.scalar(select(WorkflowRun).where(WorkflowRun.id == domain_model.id_))
-            if not existing:
-                # For new records, get the next sequence number
-                stmt = select(func.max(WorkflowRun.sequence_number)).where(
-                    WorkflowRun.app_id == self._app_id,
-                    WorkflowRun.tenant_id == self._tenant_id,
-                )
-                max_sequence = session.scalar(stmt)
-                db_model.sequence_number = (max_sequence or 0) + 1
-            else:
-                # For updates, keep the existing sequence number
-                db_model.sequence_number = existing.sequence_number
+        # No sequence number generation needed anymore
 
         db_model.type = domain_model.workflow_type
         db_model.version = domain_model.workflow_version