Require textFormat declaration for all Text elements.

shell/Ui/Toggle.qml

@@ -69,6 +69,7 @@ BorderSurface {
       anchors.verticalCenter: parent.verticalCenter
 
       Text {
+        textFormat: Text.PlainText
         text: root.label
         color: root.foreground
         font.family: root.fontFamily
@@ -79,6 +80,7 @@ BorderSurface {
       }
 
       Text {
+        textFormat: Text.PlainText
         visible: root.description !== ""
         text: root.description
         color: Qt.darker(root.foreground, 1.5)