[clang] [clang][PAC][darwin] Set correct default ptrauth features for arm64e-darwin (PR #153722)

[Oliver Hunt via cfe-commits]

================
@@ -0,0 +1,85 @@
+// RUN: %clang -target arm64                   -DNO_DEFAULT_PTRAUTH     %s -fsyntax-only -Xclang -verify=no_default_ptrauth
+// RUN: %clang -target arm64-apple-macosx      -DNO_DEFAULT_PTRAUTH     %s -fsyntax-only -Xclang -verify=no_default_ptrauth
+// RUN: %clang -target arm64-darwin            -DNO_DEFAULT_PTRAUTH     %s -fsyntax-only -Xclang -verify=no_default_ptrauth
+// RUN: %clang -target arm64-apple-darwin      -DNO_DEFAULT_PTRAUTH     %s -fsyntax-only -Xclang -verify=no_default_ptrauth
+// RUN: %clang -target arm64-apple-ios-macabi  -DNO_DEFAULT_PTRAUTH     %s -fsyntax-only -Xclang -verify=no_default_ptrauth
+// RUN: %clang -target arm64-linux-gnu         -DNO_DEFAULT_PTRAUTH     %s -fsyntax-only -Xclang -verify=no_default_ptrauth
+// RUN: %clang -target arm64e-linux-gnu        -DNO_DEFAULT_PTRAUTH     %s -fsyntax-only -Xclang -verify=no_default_ptrauth
----------------
ojhunt wrote:

I mostly had these here as a hint for linux folk to add their defaults into here as well.

https://github.com/llvm/llvm-project/pull/153722