Fix process for generating embeddings for Notion entries (#648)

* Fix process for generating embeddings for Notion entries
* If no title field found, just log a warning and set the title to

src/khoj/processor/content/notion/notion_to_entries.py

@@ -112,7 +112,9 @@ def process(
                             page_entries = self.process_page(p_or_d)
                             current_entries.extend(page_entries)
 
-        return self.update_entries_with_ids(current_entries, user)
+        current_entries = TextToEntries.split_entries_by_max_tokens(current_entries, max_tokens=256)
+
+        return self.update_entries_with_ids(current_entries, user=user)
 
     def process_page(self, page):
         page_id = page["id"]
@@ -232,8 +234,9 @@ def get_page_content(self, page_id):
         elif "Event" in properties:
             title_field = "Event"
         elif title_field not in properties:
-            logger.error(f"Page {page_id} does not have a title field")
-            return None, None
+            logger.warning(f"Title field not found for page {page_id}. Setting title as None...")
+            title = None
+            return title, content
         try:
             title = page["properties"][title_field]["title"][0]["text"]["content"]
         except Exception as e: