Banner scaling issue with welcome screen when switching to Compact (Minwaita)

Summary:

The welcome banner scales incorrectly when selecting the compact theme on welcome page. ... (write here)

Steps to reproduce:

• open Inkscape.
• Under Quick Setup on welcome screen select compacted for appearance dropdown.
• Welcome banner is too small for the view.

What happened?

The welcome banner is displayed too small for the view and you end up seeing the wallpaper rendered behind the window. ...

What should have happened?

The welcome banner should have been scaled to correctly fit the view. ...

Sample attachments:

Version info

Inkscape 1.2-dev (9ee32be, 2021-06-19)

    GLib version:     2.68.0
    GTK version:      3.24.29
    glibmm version:   2.60.0
    gtkmm version:    3.24.4
    libxml2 version:  2.9.12
    libxslt version:  1.1.34
    Cairo version:    1.16.0
    Pango version:    1.48.4
    HarfBuzz version: 2.8.0

    OS version:       macOS