Windows: bump NTDDI_VERSION to latest version and remove some duplicated code

We have NTDDI_WIN10_NI (0x0A00000C) in the Win11 SDK (10.0.22621)
so bump the value in Qt (currently 0x0A00000B) to it.

And when searching for _WIN32_WINNT/WINVER/NTDDI_VERSION throughout
the whole qtbase codebase, I found some duplicated code, mostly
leftovers from the legacy time. Replace them with our own windows
header can achieve the same effect: we have defined all the necessary
macros to unblock the latest features. And place the header at the
top most place to include the macros as early as possible.

Change-Id: I37d9ac40ca9748208c7b2e89f374eda362dbefd6
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

src/corelib/global/qt_windows.h

@@ -19,7 +19,7 @@
 #  define _WIN32_IE 0x0A00
 #endif
 #ifndef NTDDI_VERSION
-#  define NTDDI_VERSION 0x0A00000B // NTDDI_WIN10_CO
+#  define NTDDI_VERSION 0x0A00000C // NTDDI_WIN10_NI
 #endif
 
 #ifndef NOMINMAX

src/plugins/platforms/windows/qwindowsdialoghelpers.cpp

@@ -3,10 +3,6 @@
 
 #define QT_NO_URL_CAST_FROM_STRING 1
 
-#ifndef _WIN32_WINNT
-#define _WIN32_WINNT 0x0A00
-#endif
-
 #include <QtCore/qt_windows.h>
 #include "qwindowscombase.h"
 #include "qwindowsdialoghelpers.h"

src/plugins/platforms/windows/qwindowspointerhandler.cpp

@@ -1,9 +1,7 @@
 // Copyright (C) 2019 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
-#ifndef WINVER
-#  define WINVER 0x0A00 // Enable pointer functions for MinGW
-#endif
+#include <QtCore/qt_windows.h>
 
 #include "qwindowspointerhandler.h"
 #include "qwindowsmousehandler.h"

src/plugins/platforms/windows/qwindowssystemtrayicon.cpp

@@ -1,13 +1,7 @@
 // Copyright (C) 2017 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
-#ifndef WINVER
-#  define WINVER 0x0A00 // required for NOTIFYICONDATA_V2_SIZE, ChangeWindowMessageFilterEx() (MinGW 5.3)
-#endif
-
-#ifndef NTDDI_VERSION
-#  define NTDDI_VERSION 0x0A00000B // required for Shell_NotifyIconGetRect (MinGW 5.3)
-#endif
+#include <QtCore/qt_windows.h>
 
 #include "qwindowssystemtrayicon.h"
 #include "qwindowscontext.h"
@@ -23,7 +17,6 @@
 #include <QtCore/qsettings.h>
 #include <qpa/qwindowsysteminterface.h>
 
-#include <qt_windows.h>
 #include <commctrl.h>
 #include <shellapi.h>
 #include <shlobj.h>

src/plugins/platforms/windows/qwindowstheme.cpp

@@ -1,10 +1,7 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
-// SHSTOCKICONINFO is only available since Vista
-#ifndef _WIN32_WINNT
-#  define _WIN32_WINNT 0x0A00
-#endif
+#include <QtCore/qt_windows.h>
 
 #include "qwindowstheme.h"
 #include "qwindowsmenu.h"
@@ -15,7 +12,6 @@
 #  include "qwindowssystemtrayicon.h"
 #endif
 #include "qwindowsscreen.h"
-#include "qt_windows.h"
 #include <commctrl.h>
 #include <objbase.h>
 #ifndef Q_CC_MINGW

src/plugins/platforms/windows/qwindowswindow.cpp

@@ -1,9 +1,7 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
-#ifndef WINVER
-#  define WINVER 0x0A00 // Enable touch functions for MinGW
-#endif
+#include <QtCore/qt_windows.h>
 
 #include "qwindowswindow.h"
 #include "qwindowscontext.h"

tests/benchmarks/corelib/thread/qmutex/tst_bench_qmutex.cpp

@@ -51,9 +51,6 @@ void NativeMutexUnlock(NativeMutexType *mutex)
 }
 #endif
 #elif defined(Q_OS_WIN)
-#  if !defined(_WIN32_WINNT)
-#    define _WIN32_WINNT 0x0A00
-#  endif
 #  include <qt_windows.h>
 typedef CRITICAL_SECTION NativeMutexType;
 void NativeMutexInitialize(NativeMutexType *mutex)