Conda version lacks of the "Start Page Blank" Fix.

Hello, I've updated fcenv-dev miniconda environment on Linux, and I've notead that it lacks for the fix that was inserted in the AppImage build to make "Start Page" working again.

https://github.com/FreeCAD/FreeCAD-Bundle/commit/7d89de1c4d265ef8b5ccad72672815133a55c913

If needed I've done this to make it work in the actual miniconda installation:

in file:

.../miniconda3/envs/fcenv-dev/Mod/Start/Init.py

I've inserted these lines:

```
import os
os.environ["QTWEBENGINE_DISABLE_SANDBOX"] = "1"
```

Hope it helps

Regards

Carlo D.

Start by comparing the AppImage fix in commit 7d89de1c4d265ef8b5ccad72672815133a55c913 with Mod/Start/Init.py in the miniconda environment. Trace how that file is supplied by the FreeCAD_Conda recipes, then verify that the conda build makes the Start Page work on Linux without manual edits.

Written by the indexing model from the issue text.