If you don't want to search for each of the widgets within ListViewControls separately, you can temporarily move the widget file out of the widgets folder and press F4 to synchronize the project folder. Studio Pro will then show an error for each page on which one of the ListViewControl widgets is used, showing which widget it expected but could not find.
In Studio Pro, Edit menu, Find Advanced, Choose Add-on widgets, choose the widget you want to search for and click Find. The find results will show where the widget is used.