CorePlugin: Remove foreach / Q_FOREACH usage

Task-number: QTCREATORBUG-27464
Change-Id: I0d0257bbd46f3eec9b11b386d1987156e83a9dac
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/coreplugin/modemanager.cpp

@@ -301,7 +301,7 @@ void ModeManager::addAction(QAction *action, int priority)
 
     // Count the number of commands with a higher priority
     int index = 0;
-    foreach (int p, d->m_actions) {
+    for (int p : qAsConst(d->m_actions)) {
         if (p > priority)
             ++index;
     }