CorePlugin: Remove foreach / Q_FOREACH usage mostly in dialogs

Task-number: QTCREATORBUG-27464
Change-Id: Iad47e9cb0b2fa7590dba2d26d0a33a83d2909bb7
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/dialogs/openwithdialog.cpp

@@ -58,7 +58,7 @@ void OpenWithDialog::setOkButtonEnabled(bool v)
 
 void OpenWithDialog::setEditors(const QStringList &editors)
 {
-    foreach (const QString &e, editors)
+    for (const QString &e : editors)
         editorListWidget->addItem(e);
 }