[clang] [clang][Driver][Darwin] Use `xcselect` for `*-apple-darwin*` targets too (PR #186683)

[Carlo Cabrera via cfe-commits]

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@@ -6798,6 +6798,8 @@ def _help_hidden : Flag<["--"], "help-hidden">,
   HelpText<"Display help for hidden options">;
 def _sysroot_EQ : Joined<["--"], "sysroot=">, Visibility<[ClangOption, FlangOption]>;
 def _sysroot : Separate<["--"], "sysroot">, Alias<_sysroot_EQ>;
+def no_sysroot : Flag<["--"], "no-sysroot">,
+  HelpText<"Disable xcselect SDK injection on macOS">;
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carlocab wrote:

Sure, no problem. Renamed again in 64a1d70524456982ba8888dfafd5449042c27386.

https://github.com/llvm/llvm-project/pull/186683