Inset shadow effect does not work

Summary:

"Inset shadow" effect does not work

share/extensions/inset_shadow.py is using the wrong class, Edge3D instead of InsetShadow.

Inkscape 1.4-dev (dbcff38720, 2023-06-14, custom)

    GLib version:     2.76.3
    GTK version:      3.24.38
    glibmm version:   2.66.6
    gtkmm version:    3.24.7
    libxml2 version:  2.9.13
    libxslt version:  1.1.38
    Cairo version:    1.16.0
    Pango version:    1.50.14
    HarfBuzz version: 7.3.0

    OS version:       macOS 13.4 (22F66) arm64