Issue with move down button (selector tool)
#### Steps to reproduce:
<!-- Describe what you did (step-by-step) so we can reproduce: -->
- open Inkscape
- draw some objects
- select one of them
- press move down button (selection tool) repeatedly
#### What happened?
object not reaching the lowest position

#### What should have happened?
object should reach the lowest position as when hitting same button from inside layers and object dialog
#### Version info
Inkscape 1.5-dev (1b21b40, 2026-02-18, custom) on win 11.
Inkscape 1.4.3 (0d15f75, 2025-12-25) ~~working as expected~~
Edit: removed 1.5 regression as behavior is actually the same between 1.4.3 and 1.5
issue