bug(SelectTree): 页面刷新时触发 OnSelectedItemChanged 事件

[zrj531]

Which class is this unit test associated with?

选择其他控件 比如Select组件选择项，也会触发Select Tree组件的OnSelectedItemChanged事件.

版本号9.9.1

BlazorApp1.zip

[bb-auto]

@zrj531 Thank you for submitting. We will give feedback later.