fix(master_node): 移除账户信息解密逻辑

- 删除了对账户数据的 AES 解密操作-保留密码字段的解密处理
- 简化了账户信息的获取流程

src/integrations/master_node/api.py

@@ -77,11 +77,7 @@ class MasterNodeService:
         if not result.data or not result.data.account:
             return RechargeQueryModel()
 
-        self.__account = decrypt_with_aes(
-            result.data.account,
-            AESKey.load_from_base64("P0x6Gy6dXIpPbhE7PHxaHbfZHhsbT2qNPlx3qbHTP1o="),
-            AESKey.load_from_base64("nywao1XkDXeYwbPeWh+SxA=="),
-        )
+        self.__account = result.data.account
         self.__password = decrypt_with_aes(
             result.data.password,
             AESKey.load_from_base64("P0x6Gy6dXIpPbhE7PHxaHbfZHhsbT2qNPlx3qbHTP1o="),