[llvm] [AArch64][LV][SLP] Vectorizers use call cost for vectorized frem (PR #82488)

[Paschalis Mpeis via llvm-commits]

paschalis-mpeis wrote:

The below patch has landed by @paulwalker-arm allows us to safety encapsulate all functionality in `getArithmeticInstrCost`
- #83859

This force-update rebases to main and restructure the code in SLP and Loop Vectorizers.

https://github.com/llvm/llvm-project/pull/82488