Arm backend: Relocate not-equal decomposition after rank matching

[Sebastian-Larsson]

Move DecomposeNotEqualPass to the post scalar-removal node transformation block. This removes its special placement between ReplaceScalarWithTensorByProfilePass and MatchArgRanksPass.

Also match ranks for ne.Tensor before decomposition so scalar not-equal does not produce mismatched TOSA EQUAL operands.

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils @robell @rascani

[pytorch-bot]

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✅ You can merge normally! (4 Unrelated Failures)

As of commit 211f988 with merge base 77df9b7 ():

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