Preserve SDPA for CoreML#1
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YifanShenSZ wants to merge 1 commit intocoreml-quantizationfrom
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Motivation
Starting from iOS18, CoreML has added SDPA op, so there is no longer need to decompose torch SDPA
Solution
Following pytorch#3483, add
ops_not_to_decomposein CoreML partitioner, then useto_edge_transform_and_lowerAPI in llama exportPS
Will need to merge pytorch#5228 before this