Set height and of the material brand menuitem explicitly

Contributes to CURA-9522

resources/qml/Menus/MaterialBrandMenu.qml

@@ -14,6 +14,7 @@ Instead we'll use a pop-up which doesn't seem to have that problem. */
 Cura.MenuItem
 {
     id: materialBrandMenu
+    height: UM.Theme.getSize("menu").height + UM.Theme.getSize("narrow_margin").height
     overrideShowArrow: true
 
     property var materialTypesModel