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0c1ccc07 - fix pytest tests/pipelines/pixart_sigma/test_pixart.py::PixArtSigmaPi… (#12842)

fix pytest tests/pipelines/pixart_sigma/test_pixart.py::PixArtSigmaPi… (#12842) fix pytest tests/pipelines/pixart_sigma/test_pixart.py::PixArtSigmaPipelineIntegrationTests::test_pixart_512 in xpu Signed-off-by: Wang, Yi <yi.a.wang@intel.com> Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>