[Select]: Using render in Select.Icon do not remove the default icon

[mahi160]

Bug report

Current behavior

When you use a custom icon for Select.Icon with render, it doesn't remove the default icon.

Expected behavior

I should remove the default one just like when you use the icon as a children

Reproducible example

<Select.Icon
    data-slot="wu-select-trigger-icon"
    render={<span className="arrow-drop-down" />} // font icon
/>

Base UI version

1.4.1

Which browser are you using?

Brave

Which OS are you using?

Mac OS

[atomiks]

Adding children={undefined} will remove the default icon:

<Select.Icon
  data-slot="wu-select-trigger-icon"
  children={undefined}
  render={<span className="arrow-drop-down" />}
/>