Use correct scrollbar and clip contents

We've not been clipping this for so long, but the text really does overlap with the label and the buttons if we don't (and the text is sufficiently large).

Contributes to issue CURA-8686.

resources/qml/Dialogs/WorkspaceSummaryDialog.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2021 Ultimaker B.V.
+// Copyright (c) 2022 Ultimaker B.V.
 // Cura is released under the terms of the LGPLv3 or higher.
 
 import QtQuick 2.10
@@ -6,7 +6,7 @@ import QtQuick.Controls 2.9
 import QtQuick.Layouts 1.3
 import QtQuick.Window 2.2
 
-import UM 1.2 as UM
+import UM 1.5 as UM
 import Cura 1.0 as Cura
 
 UM.Dialog
@@ -81,6 +81,19 @@ UM.Dialog
                 bottom: controls.top
                 bottomMargin: UM.Theme.getSize("default_margin").height
             }
+
+            ScrollBar.vertical: UM.ScrollBar
+            {
+                parent: scroll
+                anchors
+                {
+                    top: parent.top
+                    right: parent.right
+                    bottom: parent.bottom
+                }
+            }
+            clip: true
+
             ColumnLayout
             {
                 spacing: UM.Theme.getSize("default_margin").height