Call compositor backend actions with model reference

This allows the compositor backend to decide what property to use when invoking the action

Modules/Bar/Widgets/Taskbar.qml

@@ -105,13 +105,13 @@ Rectangle {
 
             if (mouse.button === Qt.LeftButton) {
               try {
-                CompositorService.focusWindow(taskbarItem.modelData.id)
+                CompositorService.focusWindow(taskbarItem.modelData)
               } catch (error) {
                 Logger.error("Taskbar", "Failed to activate toplevel: " + error)
               }
             } else if (mouse.button === Qt.RightButton) {
               try {
-                CompositorService.closeWindow(taskbarItem.modelData.id)
+                CompositorService.closeWindow(taskbarItem.modelData)
               } catch (error) {
                 Logger.error("Taskbar", "Failed to close toplevel: " + error)
               }

Modules/Bar/Widgets/Workspace.qml

@@ -119,7 +119,7 @@ Item {
       next = localWorkspaces.count - 1
     const ws = localWorkspaces.get(next)
     if (ws && ws.idx !== undefined)
-      CompositorService.switchToWorkspace(ws.idx)
+      CompositorService.switchToWorkspace(ws)
   }
 
   Component.onCompleted: {
@@ -323,7 +323,7 @@ Item {
             anchors.fill: parent
             cursorShape: Qt.PointingHandCursor
             onClicked: {
-              CompositorService.switchToWorkspace(model.idx)
+              CompositorService.switchToWorkspace(model)
             }
             hoverEnabled: true
           }
@@ -467,7 +467,7 @@ Item {
             anchors.fill: parent
             cursorShape: Qt.PointingHandCursor
             onClicked: {
-              CompositorService.switchToWorkspace(model.idx)
+              CompositorService.switchToWorkspace(model)
             }
             hoverEnabled: true
           }