[Error Overlay] New design (#75679)
This PR implements a new design for the experimental Next.js Error
Overlay:
- Border-less body design
- Notch cut-out for the navigation and version info
<img width="1088" alt="image"
src="https://github.com/user-attachments/assets/31385793-82c4-41ab-a34d-6b49955f5823"
/>
---
- Closes
[NDX-782](https://linear.app/vercel/issue/NDX-782/re-redesign-contents-in-a-single-body-with-padding)
- Closes
[NDX-781](https://linear.app/vercel/issue/NDX-781/re-redesign-navigation-header)
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Co-authored-by: devjiwonchoi <devjiwonchoi@gmail.com>
