clock/calendar: toggle clock enabled/disabled on resume from suspend

fixes #1298
fixes #2705

quickshell/Modules/BuiltinDesktopPlugins/DesktopClockWidget.qml

@@ -1,6 +1,7 @@
 import QtQuick
 import Quickshell
 import qs.Common
+import qs.Services
 import qs.Widgets
 
 Item {
@@ -92,6 +93,15 @@ Item {
         precision: root.needsSeconds ? SystemClock.Seconds : SystemClock.Minutes
     }
 
+    Connections {
+        target: SessionService
+
+        function onSessionResumed() {
+            systemClock.enabled = false;
+            systemClock.enabled = true;
+        }
+    }
+
     Rectangle {
         anchors.fill: parent
         radius: Theme.cornerRadius