Kill frozen task

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Problem description

While in BIM, I hit ctrl-Z with tool active and after measuring window position (measure tool) after which could not close down measuure tool. Had to exit & reload freecad to proceed. Needed: method of killing a frozen task w/out damage to file.

OS: Windows 10 build 19045
Architecture: x86_64
Version: 1.0.2.39319 (Git) Conda
Build type: Release
Branch: (HEAD detached at 1.0.2)
Hash: 256fc7eff3379911ab5daf88e10182c509aa8052
Python 3.11.13, Qt 5.15.15, Coin 4.0.3, Vtk 9.3.0, OCC 7.8.1
Locale: English/United States (en_US)
Stylesheet/Theme/QtStyle: FreeCAD Light.qss/FreeCAD Light/Fusiont

### Full version info

```shell
OS: Windows 10 build 19045
Architecture: x86_64
Version: 1.0.2.39319 (Git) Conda
Build type: Release
Branch: (HEAD detached at 1.0.2)
Hash: 256fc7eff3379911ab5daf88e10182c509aa8052
Python 3.11.13, Qt 5.15.15, Coin 4.0.3, Vtk 9.3.0, OCC 7.8.1
Locale: English/United States (en_US)
Stylesheet/Theme/QtStyle: FreeCAD Light.qss/FreeCAD Light/Fusion
```

### Subproject(s) affected?

None

### Anything else?

_No response_

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct