Inkscape 1.5-dev: 3D box has incorrect line thickness when using last used style

Summary:

3D boxes seem to have a different line width applied when using the Last used style. I guess it's a problem related to the SVG scale.

Steps to reproduce:

• open Inkscape
• switch both the Rectangle tool and the 3D box tool to use the Last used style
• switch to the rectangle tool
• draw a rectangle
• apply a 1mm stroke
• switch to the 3D box tool
• draw a 3D box

What happened?

The stroke thickness of the 3D box is 3.78.

What should have happened?

The stroke thickness of the 3D box is 1.

Version info

Inkscape 1.5-dev (f6063908f1, 2025-09-30, custom)

                      Compile  (Run)
    GLib version:     2.86.0
    GTK version:      4.20.1 (4.20.1)
    glibmm version:   2.86.0
    gtkmm version:    4.20.0
    libxml2 version:  2.14.6
    libxslt version:  1.1.43
    Cairo version:    1.18.4 (1.18.4)
    Pango version:    1.56.4 (1.56.4)
    HarfBuzz version: 11.5.1 (11.5.1)
    Poppler version:  25.09.1

    OS version:       Slackware 15.0 x86_64 (post 15.0 -current)