Fix/bugfixes

[belerico]

Summary

This PR solves multiple bugs, in particular:

• It fixes the numpy version to be <2.0
• the unwrap_fabric method extracts first the .module from the _FabricModule returning the original module, also unwrapped from the Strategy: this prevents errors with the deepcopy
• Fixes various tests

Type of Change

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• Bug fix (non-breaking change that solves an issue)

Checklist

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• I have tested my changes locally and they work as expected. (Please describe the tests you performed.)
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