More passes updated to be more efficient and correctly set their modified bit

[DrJessop]

Summary:
Updated

• FuseCascadedTransposeOrPermuteOps
• ReplaceSplitWithSlicePass
• ReplacePowWithMulPass
• ReplaceMatmulWithTransposedMatmulPass

Reviewed By: hsharma35

Differential Revision: D87812526

[pytorch-bot]

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