<langchain_community\llms\chatglm.py>: <Correcting "history"> (#16729)

Use the real "history" provided by the original program instead of
putting "None" in the history.

- **Description:** I change one line in the code to make it return the
"history" of the chat model.
- **Issue:** At the moment it returns only the answers of the chat
model. However the chat model himself provides a history more complet
with the questions of the user.
  - **Dependencies:** no dependencies required for this change,

libs/community/langchain_community/llms/chatglm.py

@@ -125,5 +125,5 @@ class ChatGLM(LLM):
         if stop is not None:
             text = enforce_stop_tokens(text, stop)
         if self.with_history:
-            self.history = self.history + [[None, parsed_response["response"]]]
+            self.history = parsed_response["history"]
         return text