[QWebEngineView] Webview loses focus on second load()

Webview will lose focus (focus will move to the next widget in focus chain) after 2nd call to QWebEngineView::load().
The reason is that QWebEnginePrivate::passOnFocus gets called which then calls QWidget::focusNextPrevChild.

Please see attached test case, you should see that focusNextPrevChild was called.