Sort by most recent chatIDs (#9946)

When we `lazy_load` iMessage chats, return chats w/ most recent msg
first (matches what is visualized in app).

libs/langchain/langchain/chat_loaders/imessage.py

@@ -108,8 +108,13 @@ class IMessageChatLoader(chat_loaders.BaseChatLoader):
             ) from e
         cursor = conn.cursor()
 
-        # Fetch the list of chat IDs
-        cursor.execute("SELECT ROWID FROM chat")
+        # Fetch the list of chat IDs sorted by time (most recent first)
+        query = """SELECT chat_id
+        FROM message
+        JOIN chat_message_join ON message.ROWID = chat_message_join.message_id
+        GROUP BY chat_id
+        ORDER BY MAX(date) DESC;"""
+        cursor.execute(query)
         chat_ids = [row[0] for row in cursor.fetchall()]
 
         for chat_id in chat_ids: