Add isiOSAppOnVision to _NSSwiftProcessInfo (#1505)

Author: iCharlesHu

Sources/FoundationEssentials/ProcessInfo/ProcessInfo+ObjC.swift

@@ -60,6 +60,14 @@ extension _NSSwiftProcessInfo {
         return dyld_get_active_platform() == PLATFORM_IOS
 #else
         return false
+#endif
+    }
+    
+    override var isiOSAppOnVision: Bool {
+#if os(visionOS)
+        return dyld_get_active_platform() == PLATFORM_IOS || dyld_get_active_platform() == PLATFORM_IOSSIMULATOR
+#else
+        return false
 #endif
     }
 }