Move compat.h include from system.h to system.cpp

src/common/system.cpp

@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2022 The Bitcoin Core developers
+// Copyright (c) 2009-present The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -12,6 +12,7 @@
 #ifndef WIN32
 #include <sys/stat.h>
 #else
+#include <compat/compat.h>
 #include <codecvt>
 #endif