Fix compat with newer MSVC headers

allow using older versions of clang than 19 until #1942

src/Parser/ParserOptions.cs

@@ -160,6 +160,7 @@ namespace CppSharp.Parser
             AddArguments("-fms-extensions");
             AddArguments("-fms-compatibility");
             AddArguments("-fdelayed-template-parsing");
+            AddArguments("-D_ALLOW_COMPILER_AND_STL_VERSION_MISMATCH");
         }
 
         /// <summary>