fixes a bug that occurs when trying to open the downloaded model weights

[LennartPhil]

Fixes the bug that occurs when trying to open the downloaded model weights.

Considering that the model weights are named like t1-o_best.tar, the _load_model function should look for the value of the interference_mode and of the model_selection

[MarcelRosier]

without .value it worked just fine for me (internally python will call the enums str method which should result in the same thing?). So I'm curious: What Python version are you using to run into an issue?
However, being explicit is probably a good thing here - so thanks for contributing!

[LennartPhil]

I'm currently on Python 3.11, glad I could help!