Avoid system tray resizing

Summary: Currently, there was some code to avoid system tray resizing. However, being the properties not set to the root element, this was not having any effect. This fixes it.

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D29824

applets/systemtray/package/contents/ui/ExpandedRepresentation.qml

@@ -25,6 +25,7 @@ import org.kde.plasma.components 3.0 as PlasmaComponents
 import org.kde.plasma.extras 2.0 as PlasmaExtras
 
 Item {
+    //set width/height to avoid an useless Dialog resize
     width: Layout.minimumWidth
     height: Layout.minimumHeight
     Layout.minimumWidth: units.gridUnit * 24
@@ -61,7 +62,6 @@ Item {
 
     ColumnLayout {
         id: expandedRepresentation
-        //set width/height to avoid an useless Dialog resize
         anchors.fill: parent
         spacing: plasmoidHeading.bottomPadding