[ROCm][V0][Attention] Revert to th old FA triton kernel

[gshtras]

Revert to the previous version of the triton attention kernel, modified to support FP8 computation.
The kernel brought in in #12591 turned out to have performance issues, and broken support for FP8 quantized models.
Until that is resolved we want to replace it from the performant version from the ROCm fork

[github-actions]

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