MenuItem: don't take space when not visible

src/qml/Base/HMenu.qml

@@ -11,7 +11,9 @@ Menu {
         let rightPadding = 0
 
         for (let i = 0; i < count; ++i) {
-            let item     = itemAt(i)
+            let item = itemAt(i)
+            if (! item.visible) continue
+
             result       = Math.max(item.contentItem.implicitWidth, result)
             leftPadding  = Math.max(item.leftPadding, leftPadding)
             rightPadding = Math.max(item.rightPadding, rightPadding)

src/qml/Base/HMenuItem.qml

@@ -8,6 +8,7 @@ MenuItem {
     rightPadding: spacing
     topPadding: spacing / 1.75
     bottomPadding: spacing / 1.75
+    height: visible ? implicitHeight : 0
 
 
     readonly property alias iconItem: contentItem.icon