plasmoid: Fix setting initial size

Some change in Qt or Plasma prevents the old way of setting
it to work (using onVisibleChanged). Using a Loader and
onLoaded seems to work better.

plasmoid/package/contents/ui/FullRepresentation.qml

@@ -16,7 +16,7 @@ ColumnLayout {
     Layout.minimumHeight: units.gridUnit * 15
 
     // define function to update the size according to the settings
-    // when "floating" (shown as popup)
+    // when "floating" (shown as popup) or tied to an edge
     function updateSize() {
         switch (plasmoid.location) {
         case PlasmaCore.Types.Floating:
@@ -33,13 +33,6 @@ ColumnLayout {
         }
     }
 
-    // update the size when becoming visible
-    onVisibleChanged: {
-        if (visible) {
-            updateSize()
-        }
-    }
-
     // update the size when settings changed
     Connections {
         target: plasmoid.nativeInterface

plasmoid/package/contents/ui/main.qml

@@ -11,8 +11,9 @@ Item {
     Plasmoid.preferredRepresentation: Plasmoid.fullRepresentation
     Plasmoid.compactRepresentation: CompactRepresentation {
     }
-    Plasmoid.fullRepresentation: FullRepresentation {
-        focus: true
+    Plasmoid.fullRepresentation: Loader {
+        source: "FullRepresentation.qml"
+        onLoaded: item.updateSize()
     }
 
     Plasmoid.icon: "syncthingtray"