[clang] [Darwin][Driver][clang] arm64-apple-none-macho is missing the Apple macros from arm-apple-none-macho (PR #122427)

[Ian Anderson via cfe-commits]

================
@@ -243,6 +247,8 @@ std::unique_ptr<TargetInfo> AllocateTarget(const llvm::Triple &Triple,
   case llvm::Triple::thumbeb:
----------------
ian-twilightcoder wrote:

Yeah, that's why I was asking if we should just always use Darwin for MachO instead of inconsistently using Darwin for some archs and was-AArch64leTargetInfo-now-AppleMachO for others. Keeping it inconsistent is probably the smaller/safer change, but the inconsistency does bother me.

https://github.com/llvm/llvm-project/pull/122427