[ScrollView] set right and bottom padding to make room for scrollbars

style/qtquickcontrols/ScrollView.qml

@@ -11,6 +11,27 @@ T.ScrollView {
     implicitHeight: Math.max(implicitBackgroundHeight + topInset + bottomInset,
                              contentHeight + topPadding + bottomPadding)
 
+    rightPadding: {
+        if (ScrollBar.vertical
+            && ScrollBar.vertical.background
+            && ScrollBar.vertical.background.visible
+        ) {
+            return ScrollBar.vertical.background.width
+        } else {
+            return horizontalPadding
+        }
+    }
+    bottomPadding: {
+        if (ScrollBar.horizontal
+            && ScrollBar.horizontal.background
+            && ScrollBar.horizontal.background.visible
+        ) {
+            return ScrollBar.horizontal.background.height
+        } else {
+            return verticalPadding
+        }
+    }
+
     ScrollBar.vertical: ScrollBar {
         parent: control
         x: control.mirrored ? 0 : control.width - width