Implement proper macOS version check (#11352)

darwin/util/sysinfo_darwin.mm

@@ -0,0 +1,21 @@
+#import <Foundation/Foundation.h>
+
+namespace Darwin_Version
+{
+    NSOperatingSystemVersion osver = NSProcessInfo.processInfo.operatingSystemVersion;
+
+    int getNSmajorVersion()
+    {
+        return osver.majorVersion;
+    }
+
+    int getNSminorVersion()
+    {
+        return osver.minorVersion;
+    }
+
+    int getNSpatchVersion()
+    {
+        return osver.patchVersion;
+    }
+}