dnm: chore: Testing domlayoutdelegate

[snowystinger]

Builds #8696 so we can test it more easily

✅ Pull Request Checklist:

• Included link to corresponding React Spectrum GitHub Issue.
• Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• Filled out test instructions.
• Updated documentation (if it already exists for this component).
• Looked at the Accessibility Practices for this feature - Aria Practices

📝 Test Instructions:

🧢 Your Project:

[nwidynski]

@snowystinger Just FYI, I tested with Listbox Example, which currently has item rects being at x=1 instead of x=0 because of the 1px border.

[rspbot]

Build successful! 🎉

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