Switch back to matching target_os rather than target_vendor

`ctest` is very particular about this and the current configuration,
though working most of the time, seems to cause occasional CI errors
that can't easily be explained or mitigated. Switch back to matching all
Apple `target_os` options until `ctest` is fixed.

(backport <rust-lang#4282>)
(cherry picked from commit a986f81)

Author: tgross35

src/primitives.rs

@@ -20,7 +20,14 @@ pub type c_double = f64;
 cfg_if! {
     if #[cfg(all(
         not(windows),
-        not(target_vendor = "apple"),
+        // FIXME(ctest): just use `target_vendor` = "apple"` once `ctest` supports it
+        not(any(
+            target_os = "macos",
+            target_os = "ios",
+            target_os = "tvos",
+            target_os = "watchos",
+            target_os = "visionos",
+        )),
         not(target_os = "vita"),
         any(
             target_arch = "aarch64",