Tests that file picker interception works as expected
{
stack : Error: Failed to execute 'showOpenFilePicker' on 'Window': Intercepted by Page.setInterceptFileChooserDialog(). at <anonymous>:2:12
}
{
stack : Error: Failed to execute 'showSaveFilePicker' on 'Window': Intercepted by Page.setInterceptFileChooserDialog(). at <anonymous>:2:12
}
{
stack : Error: Failed to execute 'showDirectoryPicker' on 'Window': Intercepted by Page.setInterceptFileChooserDialog(). at <anonymous>:2:12
}
Intercepted file chooser mode: selectSingle