Replace some double with real

Commons/Settings.qml

@@ -300,7 +300,7 @@ Singleton {
         property bool doNotDisturb: false
         property list<string> monitors: []
         // Last time the user opened the notification history (ms since epoch)
-        property double lastSeenTs: 0
+        property real lastSeenTs: 0
       }
 
       // audio

Services/GitHubService.qml

@@ -45,7 +45,7 @@ Singleton {
 
       property string version: "Unknown"
       property var contributors: []
-      property double timestamp: 0
+      property real timestamp: 0
     }
   }
 

Services/NotificationService.qml

@@ -80,7 +80,7 @@ Singleton {
     JsonAdapter {
       id: historyAdapter
       property var history: []
-      property double timestamp: 0
+      property real timestamp: 0
     }
   }