fix: Ensure notification updates are reliable during error handling

- Added session refresh for notifications to prevent stale data after rollbacks in multiple document processing tasks.
- Wrapped notification update logic in try-except blocks to handle potential failures gracefully and log errors without crashing the process.
- Improved error handling for notification updates in various document processing functions, enhancing overall robustness.

surfsense_backend/app/routes/search_source_connectors_routes.py

@@ -1090,6 +1090,8 @@ async def _run_indexing_with_notifications(
         # Update notification on exception
         if notification:
             try:
+                # Refresh notification to ensure it's not stale after any rollback
+                await session.refresh(notification)
                 await NotificationService.connector_indexing.notify_indexing_completed(
                     session=session,
                     notification=notification,
@@ -1824,6 +1826,8 @@ async def run_google_drive_indexing(
         # Update notification on exception
         if notification:
             try:
+                # Refresh notification to ensure it's not stale after any rollback
+                await session.refresh(notification)
                 await NotificationService.connector_indexing.notify_indexing_completed(
                     session=session,
                     notification=notification,