Reapply " Fix QwenImage txt_seq_lens handling (#12702)" #3

Job	Run time
PyTorch Compile CUDA tests	1s
Setup Torch Pipelines CUDA Slow Tests Matrix	1s
Examples PyTorch CUDA tests on Ubuntu	1s
Torch CUDA Tests (models)	1s
PyTorch xformers CUDA tests	1s
Torch CUDA Tests (schedulers)	1s
Torch CUDA Tests (lora)	1s
Torch CUDA Tests (single_file)	1s
Torch CUDA Tests (others)	1s
Torch Pipelines CUDA Tests	-1s
	8s

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