Windows/Accessibility: Focused QListWidget is not announced by screen readers

Repro steps:

1. Using any version of Qt that supports UI Automation, create a dialog with a QListWidget
2. Open a screen reader such as NVDA (https://github.com/nvaccess/nvda http://nvda.bhvd.de/ ) or Narrator
3. Show the dialog
4. Use Tab to focus the QListWidget
5. Observe

Expected results:

• The screen reader reads the name of the QListWidget and the selected list item(s) (e.g. "Items list, Item 1, 1of 4, selected")
• The screen reader's focus indicator is shown around the selected list item

Actual results:

• The screen reader reads nothing (this is true of both NVDA and Narrator)
• The screen reader's focus indicator is shown around the previously focused widget, not the currently focused QListWidget

Additional info:

• I am upgrading an application from 5.9.3 (MSAA accessibility backend) to 5.15.1 (UIA accessibility backend).  Both NVDA and Narrator behave as expected in 5.9.3.

Code sample:

#include <QApplication>
#include <QListWidget>
#include <QPushButton>
#include <QVBoxLayout>

int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
	QCoreApplication::setApplicationName("Qt NVDA list widget bug");

	QWidget window;
	window.resize({ 300, 100 });
	window.setLayout(new QVBoxLayout());

	QListWidget* list = new QListWidget();
	list->setAccessibleName("Items");
	window.layout()->addWidget(list);

	for (int i = 1; i < 5; ++i)
	{
		const QString name = QString("Item %1").arg(i);
		list->addItem(new QListWidgetItem(name));
	}
	list->item(0)->setSelected(true);

	QPushButton *button = new QPushButton("OK");
	window.layout()->addWidget(button);

	window.show();

	return app.exec();
}