[Chore/Refactor] Use centralized naive_utc_now for UTC datetime operations (#24352)

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

api/tasks/sync_website_document_indexing_task.py

@@ -1,4 +1,3 @@
-import datetime
 import logging
 import time
 
@@ -9,6 +8,7 @@ from core.indexing_runner import IndexingRunner
 from core.rag.index_processor.index_processor_factory import IndexProcessorFactory
 from extensions.ext_database import db
 from extensions.ext_redis import redis_client
+from libs.datetime_utils import naive_utc_now
 from models.dataset import Dataset, Document, DocumentSegment
 from services.feature_service import FeatureService
 
@@ -46,7 +46,7 @@ def sync_website_document_indexing_task(dataset_id: str, document_id: str):
         if document:
             document.indexing_status = "error"
             document.error = str(e)
-            document.stopped_at = datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
+            document.stopped_at = naive_utc_now()
             db.session.add(document)
             db.session.commit()
         redis_client.delete(sync_indexing_cache_key)
@@ -72,7 +72,7 @@ def sync_website_document_indexing_task(dataset_id: str, document_id: str):
         db.session.commit()
 
         document.indexing_status = "parsing"
-        document.processing_started_at = datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
+        document.processing_started_at = naive_utc_now()
         db.session.add(document)
         db.session.commit()
 
@@ -82,7 +82,7 @@ def sync_website_document_indexing_task(dataset_id: str, document_id: str):
     except Exception as ex:
         document.indexing_status = "error"
         document.error = str(ex)
-        document.stopped_at = datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
+        document.stopped_at = naive_utc_now()
         db.session.add(document)
         db.session.commit()
         logging.info(click.style(str(ex), fg="yellow"))