1.4 beta: Ctrl no longer restricts shearing to 15° steps (regression)
#### Summary:
The Ctrl key no longer works to limit shearing of shapes to 15° steps.
#### Steps to reproduce:
- open Inkscape
- draw a rectangle
- click on it slowly twice with the selector tool
- drag on a shearing handle, with Ctrl pressed
#### What happened?
Object is being sheared.
#### What should have happened?
Object should be sheared by discrete steps.
#### Version info
```
Inkscape 1.4-beta2 (9aaf4f3498, 2024-07-30)
Compile (Run)
GLib version: 2.72.4
GTK version: 3.24.33 (3.24.33)
glibmm version: 2.66.2
gtkmm version: 3.24.5
libxml2 version: 2.9.13
libxslt version: 1.1.34
Cairo version: 1.16.0 (1.16.0)
Pango version: 1.50.6 (1.50.6)
HarfBuzz version: 2.7.4 (2.7.4)
OS version: Linux Mint 21.3
```
issue