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/libs/qmljs/qmljsplugindumper.cpp

@@ -151,7 +151,7 @@ void PluginDumper::onLoadPluginTypes(const Utils::FilePath &libraryPath,
 
     // watch library qmltypes file
     if (!plugin.typeInfoPaths.isEmpty()) {
-        for (const FilePath &path : qAsConst(plugin.typeInfoPaths)) {
+        for (const FilePath &path : std::as_const(plugin.typeInfoPaths)) {
             if (!path.exists())
                 continue;
             if (!pluginWatcher()->watchesFile(path.toString()))