Add XPU case to is_torch_bf16_gpu_available (#37132)
* Add xpu case to is_torch_bf16_gpu_available
Signed-off-by: cyy <cyyever@outlook.com>
* Refine error messages
Signed-off-by: cyy <cyyever@outlook.com>
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Signed-off-by: cyy <cyyever@outlook.com>
Co-authored-by: Marc Sun <57196510+SunMarc@users.noreply.github.com>
