![CleanShot 2025-04-30 at 13 26
44@2x](https://github.com/user-attachments/assets/f68fefe2-84a1-48b7-b9a2-47c2547cd06b)


- Adds the ThemePreviewTile component, used for upcoming onboarding UI
- Adds the CornerSolver utility for resolving correct nested corner
radii

Release Notes:

- N/A