Fix post processing plugin button alignment

This was caused by the label within the component spanning multiple lines, causing the height of the component to increase. Since the buttons were vertically aligned the positioning of these buttons are impacted.

CURA-11697

plugins/PostProcessingPlugin/PostProcessingPlugin.qml

@@ -120,6 +120,8 @@ UM.Dialog
                         UM.Label
                         {
                             Layout.fillWidth: true
+                            Layout.preferredHeight: height
+                            elide: Text.ElideRight
                             text: manager.getScriptLabelByKey(modelData.toString())
                         }