[BUG] 'Set Preview' button on add object node isn't working

**Describe the bug**
If I understand correctly, once you click the "set preview" button you should see the geometry in the viewport and in the outliner. Unfortunately, nothing happens when I do this.

**Expected behavior**
Again If I understand correctly, that button should show the geometry on the viewport or the outliner.

**Desktop (please complete the following information):**
- OS: MAC OS Catalina 10.15.4
- Blender Version: 2.83.0
- Sorcar Version: 3.1.6

Sorry, if this is a known bug. Didn't see it in the forums.
Thank you!

问题出在添加对象节点的 'Set Preview' 按钮上。在节点定义中查找 UI 按钮回调，可能位于 nodes.py 或 ui.py 之类的文件中。检查处理预览设置的 operator，并确保它正确更新 viewport 和 outliner。通过在 Blender 中运行 addon 并验证几何体是否显示来测试修复。

由索引模型根据 Issue 内容生成。