fix: advanced widgets always visible regardless of setting (#9857)

## Summary

- Fixes a bug where widgets marked as `advanced` were always visible,
ignoring the "Always show advanced widgets on all nodes" setting
- Root cause: `extractWidgetDisplayOptions` in `useGraphNodeManager.ts`
read `widget.advanced` (always `undefined` on BaseWidget) instead of
`widget.options?.advanced` (where `litegraphService` actually sets the
flag)
- Consistent with how `hidden` is already read from
`widget.options.hidden` on the adjacent line

## Test plan

- [ ] Load a node with advanced inputs (e.g. `LTXVScheduler`)
- [ ] Verify `max_shift`, `base_shift`, `stretch`, `terminal` are hidden
when "Always show advanced widgets on all nodes" is disabled
- [ ] Verify they become visible when the setting is enabled or the
per-node toggle is clicked
- [ ] Verify the advanced toggle button appears on nodes with advanced
widgets

🤖 Generated with [Claude Code](https://claude.com/claude-code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9857-fix-advanced-widgets-always-visible-regardless-of-setting-3226d73d36508132b338d098fbf19433)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/composables/graph/useGraphNodeManager.ts

@@ -204,7 +204,7 @@ function safeWidgetMapper(
 
     return {
       canvasOnly: widget.options.canvasOnly,
-      advanced: widget.advanced,
+      advanced: widget.options?.advanced ?? widget.advanced,
       hidden: widget.options.hidden,
       read_only: widget.options.read_only
     }