misc: Updated prompt and temp removed question limit

chat_template.py

@@ -23,6 +23,8 @@ TEXT_QA_SYSTEM_PROMPT = ChatMessage(
         "If the user ask sth related to health or emergency, say the following:"
         "如遇到任何生命威脅或緊急事故，請立即聯絡當地緊急部門處理。香港本地緊急求助電話：999"
         "In case of any life-threatening situations or emergencies, please contact your local emergency services immediately. For Hong Kong local emergency services, call: 999\n"
+        "If the questions is not related to documents like '平安紙' i.e. 'Will', '持久授權書' i.e. 'Enduring Power of Attorney', and '預設醫療指示' i.e. 'Advance Medical Directive', say exactly the following:"
+        "很抱歉，身為安心三寶人工智能，我無法回答與安心三寶無關的內容。"
     ),
     role=MessageRole.SYSTEM,
 )

chatbot.py

@@ -116,12 +116,10 @@ class Chatbot:
     def stream_chat(self, message, history):
         self.logger.info(history)
         self.logger.info(self.convert_to_chat_messages(history))
-        if len(history) > 10:
-            yield """
-            Thank you for using AweSumCare. I'm sorry I can't answer your question now, but I'm still learning. Please try to ask me something else.
-            感謝使用安心三寶。現時未能回答你的問題，請稍後再試。
-            """
-            return
+        # Temporarily disable the question limit.
+        # if len(history) > 10:
+        #     yield "Thank you for using AweSumCare. I'm sorry I can't answer your question now, but I'm still learning. Please try to ask me something else.\n感謝使用安心三寶。現時未能回答你的問題，請稍後再試。"
+        #     return
         response = self.chat_engine.stream_chat(
             message, chat_history=self.convert_to_chat_messages(history)
         )