引擎未正确抛出错误信息

**引擎未正确抛出错误信息**

代码地址：
https://github.com/alibaba/lowcode-engine/blob/main/packages/shell/src/api/material.ts
地36行

是不是应该改成：

if (!workspace.window?.editor) {.....

加个问号好一点啊

Open packages/shell/src/api/material.ts and inspect the code around line 36, especially the error path involving workspace.window.editor. Verify the reported failure when editor is absent, then confirm the guarded access prevents the incorrect error without changing normal behavior. Done means the relevant scenario no longer throws incorrectly.

Written by the indexing model from the issue text.