fix: 🐛 crawl (#2076)

notification id issue when not in chat fixed

# Description

Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

backend/routes/crawl_routes.py

@@ -56,14 +56,14 @@ async def crawl_endpoint(
             "type": "error",
         }
     else:
-        crawl_notification = None
+        crawl_notification_id = None
         if chat_id:
-            crawl_notification = notification_service.add_notification(
+            crawl_notification_id = notification_service.add_notification(
                 CreateNotificationProperties(
                     action="CRAWL",
                     chat_id=chat_id,
                     status=NotificationsStatusEnum.Pending,
-                )
+                ).id
             )
 
         knowledge_to_add = CreateKnowledgeProperties(
@@ -78,7 +78,7 @@ async def crawl_endpoint(
         process_crawl_and_notify.delay(
             crawl_website_url=crawl_website.url,
             brain_id=brain_id,
-            notification_id=crawl_notification.id,
+            notification_id=crawl_notification_id,
         )
 
         return {"message": "Crawl processing has started."}