fix(agents-api): Store tool_calls into entries properly

agents-api/agents_api/queries/entries/create_entries.py

@@ -99,7 +99,7 @@ async def create_entries(
             item.get("name"),  # $6
             content_to_json(item.get("content") or {}),  # $7
             item.get("tool_call_id"),  # $8
-            content_to_json(item.get("tool_calls") or {}),  # $9
+            item.get("tool_calls"),  # $9
             item.get("model"),  # $10
             item.get("token_count"),  # $11
             select_tokenizer(item.get("model"))["type"],  # $12