[Python] [testing] Restore the symbolic link to `system_models.py` from the `integrators`#2868

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khalatepradnya merged 2 commits intoNVIDIA:mainfrom

khalatepradnya:publishing-fix-3

May 6, 2025

Commits on May 6, 2025

* Restore the symbolic link to `system_models.py` from the `integrators`
khalatepradnya
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* Use relative path instead of absolute path
khalatepradnya
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