QWidgetRepaintManager: port Q_FOREACH to ranged-for

The loop body doesn't change the QHash, so use asKeyValueRange() and
ranged-for.

Un-blacklist the file, by removing "#undef QT_NO_FOREACH", and removing
the source file from NO_PCH_SOURCES.

Task-number: QTBUG-115803
Change-Id: I22924d2addeed75867edf9f6cac53f1c6f266dcc
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>

src/widgets/CMakeLists.txt

@@ -71,7 +71,6 @@ qt_internal_add_module(Widgets
     NO_PCH_SOURCES
         compat/removed_api.cpp
         kernel/qgesturemanager.cpp # undef QT_NO_FOREACH
-        kernel/qwidgetrepaintmanager.cpp # undef QT_NO_FOREACH
     GENERATE_CPP_EXPORTS
 )
 

src/widgets/kernel/qwidgetrepaintmanager.cpp

@@ -1,8 +1,6 @@
 // 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
 
-#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
-
 #include "qplatformdefs.h"
 
 #include "qwidgetrepaintmanager_p.h"
@@ -50,7 +48,7 @@ public:
     }
 
     bool isLocked() const {
-        foreach (bool v, m_locked) {
+        for (const auto &[_, v] : m_locked.asKeyValueRange()) {
             if (v)
                 return true;
         }