fixed #29556: wait for view to be constructed

inside calculateSize we request all created view items, but view does not have enough time to build the elements of the model that we assigned before calling calculateSize

Author: Eism

src/framework/uicomponents/qml/Muse/UiComponents/StyledMenuLoader.qml

@@ -72,7 +72,7 @@ Loader {
 
         onOpenPrevMenu: {
            Qt.callLater(loader.openPrevMenu)
-        }  
+        }
 
         onOpenNextMenu: {
             Qt.callLater(loader.openNextMenu)
@@ -144,7 +144,7 @@ Loader {
 
         menu.model = model
 
-        menu.calculateSize()
+        Qt.callLater(menu.calculateSize)
     }
 
     Timer {