[ILUVATAR_GPU] Fix bug of softmax kernel #2019
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+232
−49
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修复了softmax kernel中bf16的精度问题；
新增了index_elementwise_put_kernel的适配；
新增了显存不足时oom的warning；
支持了flash-attention同时传入is_casual和mask的情况，并针对mask中的最小值精度问题进行了修复；