ScalingService: 1st pass of the refactoring via signals instead of nested bindings for better efficienty and compatibility with old versions of Qt

Commons/Settings.qml

@@ -30,6 +30,9 @@ Singleton {
 
   property bool isLoaded: false
 
+  // Signal emitted when settings are loaded after startupcale changes
+  signal settingsLoaded
+
   // Function to validate monitor configurations
   function validateMonitorConfigurations() {
     var availableScreenNames = []
@@ -94,6 +97,9 @@ Singleton {
         Logger.log("Settings", "Settings loaded successfully")
         isLoaded = true
 
+        // Emit the signal
+        root.settingsLoaded()
+
         Qt.callLater(function () {
           // Some stuff like settings validation should just be executed once on startup and not on every reload
           validateMonitorConfigurations()