[executorch][native] Cover negative, rounded and subnormal GGUF super-block scales in the op samples - #24368

[executorch][native] Cover negative, rounded and subnormal GGUF super-block scales in the op samples#24368

meta-codesync[bot] merged 4 commits into

gh/digantdesai/195/basepytorch/executorch:gh/digantdesai/195/basefrom

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