Feat: enhance metadata arranging. (#12745)

### What problem does this PR solve?
#11564

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

api/db/services/dialog_service.py

@@ -377,7 +377,7 @@ async def async_chat(dialog, messages, stream=True, **kwargs):
         logging.debug("Proceeding with retrieval")
         tenant_ids = list(set([kb.tenant_id for kb in kbs]))
         knowledges = []
-        if prompt_config.get("reasoning", False):
+        if prompt_config.get("reasoning", False) or kwargs.get("reasoning"):
             reasoner = DeepResearcher(
                 chat_mdl,
                 prompt_config,