[llvm] [AArch64] Don't tail call memset if it would convert to a bzero. (PR #98969)

[Amara Emerson via llvm-commits]

aemerson wrote:

I converted the other mem routines so we can completely remove the logic in `returnTypeIsEligibleForTailCall()`

https://github.com/llvm/llvm-project/pull/98969