Dear Maintainer,
When attempting to add a BIM_column to a project, the following error message
is encountered and the operation fails:

```
No module named 'PySide6.QtSvgWidgets'Running the Python command 'BIM_Column'
failed:
Traceback (most recent call last):
  File "/usr/share/freecad/Mod/BIM/ArchStructure.py", line 388, in Activated
    self.precast = ArchPrecast._PrecastTaskPanel()
  File "/usr/share/freecad/Mod/BIM/ArchPrecast.py", line 996, in __init__
    from PySide import QtCore, QtGui, QtSvgWidgets
  File "/usr/share/freecad/Ext/PySide/QtSvgWidgets.py", line 1, in <module>
    from PySide6.QtSvgWidgets import *

No module named 'PySide6.QtSvgWidgets'
```

Installing the Debian package `python3-pyside6.qtsvgwidgets` fixes the issue. I
think this is therefore a missing dependency only.