feat(api): add support for conversation input fields in draft node run api

api/services/workflow_service.py

@@ -1,12 +1,12 @@
 import json
 import logging
+import time
 import uuid
 from collections.abc import Callable, Generator, Mapping, Sequence
 from datetime import UTC, datetime
 from typing import Any, Optional
 from uuid import uuid4
 
-import time
 from sqlalchemy import select
 from sqlalchemy.orm import Session
 
@@ -45,6 +45,7 @@ from models.workflow import (
 )
 from services.errors.app import IsDraftWorkflowError, WorkflowHashNotEqualError
 from services.workflow.workflow_converter import WorkflowConverter
+
 from .errors.workflow_service import DraftWorkflowDeletionError, WorkflowInUseError
 from .workflow_draft_variable_service import (
     DraftVariableSaver,