[llvm] [AArch64] Enable FEAT_LSFE CodeGen only when exception can be ignored (PR #212799)

[Paul Walker via llvm-commits]

paulwalker-arm wrote:

Is a Subtarget property necessary? I think shouldExpandAtomicRMWInIR can query the parent function? After which we should not really need to worry about code generation because the expectation is we'll not see such operations?

https://github.com/llvm/llvm-project/pull/212799