[tests] Enable testing for HiDream transformer (#11478)
* add tests for hidream transformer model.
* fix
* Update tests/models/transformers/test_models_transformer_hidream.py
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>
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Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>
