Transform actions don't work on any document other than the first one created

[wojtryb]

General info

• Plugin version: 1.0.0+
• Operating System: Windows 10, Ubuntu 22.04

Bug description
Citing karemuvar on krita artists: https://krita-artists.org/t/shortcut-composer-v1-2-2-plugin-for-pie-menus-multiple-key-assignment-mouse-trackers-and-more/55314/200?u=wojtryb

"""
For some reason the liquify transform works properly only with the first document I open in Krita. If I open more than one document the shortcut for the liquify tool only activates the regular transform 😦
"""