Sketcher: Preferences have no default value

[maxwxyz]

Is there an existing issue for this?

• I have searched the existing issues

Problem description

The Sketcher preferences for OVP and Dimension tool have no default value. Nothing to fall back if a user clicks on "reset":

These preferences seem to use a QComboBox which is populated through the .cpp file and the QComboBox has no member for onRestore().
Maybe it should use a PrefComboBox with stdset="0" if this is used for resetting the preferences.

Full version info

OS: Windows 11 build 22631
Word size of FreeCAD: 64-bit
Version: 0.22.0dev.36729 (Git)
Build type: Release
Branch: main
Hash: 6ca35709ddc7f95fb84eef4c24973dc489e5acde
Python 3.11.8, Qt 5.15.8, Coin 4.0.2, Vtk 9.2.6, OCC 7.7.2
Locale: English/United States (en_US)
Installed mods: 
  * CfdOF 1.25.13
  * Curves 0.6.36
  * dodo 1.0.1
  * fasteners 0.5.21
  * freecad.gears 1.2.0
  * OpenTheme 2024.5.16
  * OpticsWorkbench 1.0.17
  * sheetmetal 0.4.14

Subproject(s) affected?

Sketcher

Anything else?

No response

Code of Conduct

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[maxwxyz]

@PaddleStroke @kadet1090 FYI