How to avoid multiple match elements in UITests from iOS 13

Issue #691

Supposed we want to present a ViewController, and there exist both UIToolbar in both the presenting and presented view controllers.

From iOS 13, the model style is not full screen and interactive. From UITests perspective there are 2 UIToolbar, we need to specify the correct one to avoid multiple match errors

let editButton = app.toolbars["EditArticle.Toolbar"].buttons["Edit"]