Port from qAsConst() to std::as_const()

We've been requiring C++17 since Qt 6.0, and our qAsConst use finally
starts to bother us (QTBUG-99313), so time to port away from it
now.

Since qAsConst has exactly the same semantics as std::as_const (down
to rvalue treatment, constexpr'ness and noexcept'ness), there's really
nothing more to it than a global search-and-replace.

Task-number: QTBUG-99313
Change-Id: I88edd91395849574436299b8badda21bb93bea39
Reviewed-by: hjk <hjk@qt.io>

src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp

@@ -390,7 +390,7 @@ QmlProfilerModelManager::rangeFilter(qint64 rangeStart, qint64 rangeEnd) const
                 }
             } else {
                 if (!crossedRangeStart) {
-                    for (auto stashed : qAsConst(stack)) {
+                    for (auto stashed : std::as_const(stack)) {
                         stashed.setTimestamp(rangeStart);
                         loader(stashed, eventType(stashed.typeIndex()));
                     }