Addon Manager: update fails to overwrite files, creates nested folders instead

[Roy-043]

Is there an existing issue for this?

• I have searched the existing issues

Problem description

When updating addons I have the issue that new files are wrongly placed in nested folders. For example after updating the Fasteners WB I have this folder:
C:\Users\Name\AppData\Roaming\FreeCAD\Mod\fasteners\FsData\FsData\

In all folders a new subfolder with the same name has been created and new files are placed in those subfolders.

Full version info

OS: Windows 8 build 9600
Word size of FreeCAD: 64-bit
Version: 0.22.0dev.37358 (Git)
Build type: Release
Branch: main
Hash: 3a0152b076dd7791c9724c286963d74b5814e24f
Python 3.11.9, Qt 5.15.13, Coin 4.0.2, Vtk 9.2.6, OCC 7.7.2
Locale: C/Default (C) [ OS: Dutch/Netherlands (nl_NL) ]
Installed mods:

Subproject(s) affected?

Addon Manager

Anything else?

No response

Code of Conduct

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[maxwxyz]

@chennes fyi