tst_QWizard: port away from Q_FOREACH[3/5]: OptionInfo ctor

This is iterating over the keys() of a member container we've just
filled in the same function. The loop body clearly doesn't modify the
container being iterated over. Port to the future-proof ranged
for-loop over asKeyValueRange(), using the _-in-SB pattern Christian
Ehrlicher showed me to indicate we're not interested in the value.

Task-number: QTBUG-115803
Pick-to: 6.6 6.5
Change-Id: I3d86a1de9ea460b7d57fa421ea76e41d2c122f43
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

tests/auto/widgets/dialogs/qwizard/tst_qwizard.cpp

@@ -1642,7 +1642,7 @@ class OptionInfo
 
         for (int i = 0; i < 2; ++i) {
             QMap<QWizard::WizardOption, QSharedPointer<Operation> > operations_;
-            foreach (QWizard::WizardOption option, tags.keys())
+            for (const auto &[option, _] : std::as_const(tags).asKeyValueRange())
                 operations_[option] = SetOption::create(option, i == 1);
             operations << operations_;
         }