notFoundComponent doesn’t appear on live docs pages for invalid routes

[prajunbudathoki]

Which project does this relate to?

Router

Describe the bug

When visiting a non-existent page on the TanStack Router/Start documentation website (e.g., https://tanstack.com/router/abc), the page does not display a proper "Page Not Found" UI.

Your Example Website or App

https://tanstack.com/router/abc

Steps to Reproduce the Bug or Issue

1. Go to https://tanstack.com/router/abc (or any invalid route on the docs site)
2. Observe that the page does not show a "not found" message or component.

Expected behavior

A clear "Page not found" UI should be displayed ideally using the notFoundComponent defined in the docs.

Screenshots or Videos

No response

Platform

• Router / Start Version: [e.g. 1.121.0]
• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Browser Version: [e.g. 91.1]
• Bundler: [e.g. vite]
• Bundler Version: [e.g. 7.0.0]

Additional context

No response