feat: optimize PER_REQ_CONFIG_MODIFIER

app/utils/PER_REQ_CONFIG_MODIFIER.py

@@ -1,6 +1,10 @@
 import uuid
 
 
+def next_thread_id():
+  return str(uuid.uuid4())
+
+
 async def PER_REQ_CONFIG_MODIFIER(config, request):
   body = await request.json()
   return {
@@ -9,6 +13,6 @@ async def PER_REQ_CONFIG_MODIFIER(config, request):
         body
         .get("config", {})
         .get("configurable", {})
-        .get("thread_id", None) or str(uuid.uuid4())
+        .get("thread_id", None) or next_thread_id()
     }
   }