Use Antialiasing doesn't have effect on Icon Preview

Summary:

In "Icon Preview", the value of "Use Antialiasing" doesn't make any difference to the output image, it will always be antialiased.

Steps to reproduce:

• open Inkscape
• draw a diagonal line
• open "Icon Preview"
• change "Use Antialiasing" setting in "Document Properties"

What happened?

The preview window in "Icon Preview" didn't change to non antialiased image

What should have happened?

The preview window should display non antialiased image

Sample attachments:

It happens with any file with diagonal lines or curves

Version info

Inkscape 1.4 (e7c3feb100, 2024-10-09)

                      Compile  (Run)
    GLib version:     2.82.2
    GTK version:      3.24.43 (3.24.43)
    glibmm version:   2.66.1
    gtkmm version:    3.24.5
    libxml2 version:  2.13.4
    libxslt version:  1.1.42
    Cairo version:    1.18.2 (1.18.2)
    Pango version:    1.54.0 (1.54.0)
    HarfBuzz version: 9.0.0 (9.0.0)

    OS version:       GNOME 47 (Flatpak runtime)

This issue was also pointed out before in: inkscape!5334 (merged)