Pt2.6 compatibility

[vviitani-amd]

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What does this PR do?

Fixes #5610.

The default value for the weights_only argument in torch.load() changed from False to True between PyTorch versions 2.5 and 2.6. By explicitly including weights_only=False in the torch.load calls, the code is kept working in the same way as previously also in PyTorch >= 2.6.

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