TechDraw: no snapping of dimensions when they are vertical

[maxwxyz]

Is there an existing issue for this?

• [X] I have searched the existing issues

Problem description

Dimensions do not snap to the center when dragging, if the dimension is a vertical dimension. Horizontal dimensions snap as expected. Demo:

Full version info

OS: Windows 11 build 22631
Word size of Ondsel: 64-bit
Version: 2024.2.0dev.37179 (Git)
Build type: Release
Branch: flavor
Hash: 5d0133c096bfd2ff009350bc8dc1b9363542e473
Python 3.11.9, Qt 5.15.13, Coin 4.0.2, Vtk 9.2.6, OCC 7.7.2
Locale: German/Germany (de_DE)
Installed mods: 
  * Ondsel-Lens 2024.1.22.01

Subproject(s) affected?

Techdraw

Anything else?

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[maxwxyz]

@paddlestroke FYI