Forgot to change the header in one place.

Author: adalisk-emikhaylov

source/MRPch/MRPch.h

@@ -4,7 +4,7 @@
 // This quirk causes issues for Fastmcpp on Mac Arm.
 // This must be included before `<exception>` to work correctly, so effectively before any standard library headers.
 #if defined( __APPLE__ ) && defined( __arm64__ )
-#include <__availability>
+#include <version>
 #undef _LIBCPP_AVAILABILITY_HAS_INIT_PRIMARY_EXCEPTION
 #define _LIBCPP_AVAILABILITY_HAS_INIT_PRIMARY_EXCEPTION 0
 #endif