bar: animate tray

modules/bar/components/Tray.qml

@@ -7,9 +7,11 @@ import Quickshell.Services.SystemTray
 import QtQuick
 import Qt5Compat.GraphicalEffects
 
-BoxLayout {
-    id: root
+StyledRect {
+    animate: true
+    clip: true
 
+    BoxLayout {
         Repeater {
             model: SystemTray.items
 
@@ -52,3 +54,4 @@ BoxLayout {
             }
         }
     }
+}