connector 中改了模型名称后，client 通过user/model/list-for-brclient接口获取模型时，全都变了

希望名称可以映射为displayName 和 name， 而不会影响modelId 也会变。。。

Start at the user/model/list-for-brclient endpoint and trace how connector model names are returned to the client. Verify that the mapped displayName and name can change without changing modelId; the issue names no files or tests, so add focused coverage where this endpoint is tested if such coverage exists.

Written by the indexing model from the issue text.