fix(flow): make nested lists work inside parallel nodes

[nandanmen]

This PR allows using nested node lists inside parallel nodes:

[pkg-pr-new]

npm i https://pkg.pr.new/@cloudflare/kumo@153

commit: d3d085e

[github-actions]

Docs Preview

View docs preview

Commit: d3d085e

[github-actions]

Visual Regression Report

6 screenshot(s) with visual changes:

Button / Variants

17,596 px (1.27%) changed

Before	After	Diff

Button / Loading State

3 px (0%) changed

Before	After	Diff

Dialog / Basic Dialog

63,803 px (1.53%) changed

Before	After	Diff

Dialog / With Dropdown

55,078 px (1.32%) changed

Before	After	Diff

Select / Loading

0 px (0%) changed

Before	After	Diff

Select (Open)

0 px (0%) changed

Before	After	Diff

16 screenshot(s) unchanged

• Button / Sizes
• Button / With Icon
• Button / Icon Only
• Button / Disabled State
• Dialog / Confirmation Dialog (Alert)
• Dialog / With Actions
• Dialog / With Select
• Dialog / With Combobox
• Dialog (Open)
• Select / Basic Label and Value
• Select / Placeholder
• Select / Custom Rendering
• Select / Multiple Item
• Select / More Example
• Select / Select
• Select / Select.Option

---

Generated by Kumo Visual Regression