ENH: Modernize Qt integration in LayerDM tests#3

Thibault-Pelletier merged 1 commit intoKitwareMedical:mainKitwareMedical/SlicerLayerDisplayableManager:mainfrom

RafaelPalomar:feature/modernize_qt_integrationRafaelPalomar/SlicerLayerDisplayableManager:feature/modernize_qt_integrationCopy head branch name to clipboard