Adjust IAP UI

lib/ui/app/upgrade_dialog.dart

@@ -126,7 +126,9 @@ class _UpgradeDialogState extends State<UpgradeDialog> {
     final List<Widget> stack = <Widget>[];
     if (_queryProductError == null) {
       stack.add(
-        Scrollbar(
+        Container(
+          width: double.maxFinite,
+          child: Scrollbar(
             thumbVisibility: true,
             controller: _scrollController,
             child: ListView(
@@ -144,6 +146,7 @@ class _UpgradeDialogState extends State<UpgradeDialog> {
               ],
             ),
           ),
+        ),
       );
     } else {
       stack.add(Center(