Context missing on route preload

[jakst]

Describe the bug

When preloading a route inside a layout, the context defined in beforeLoad on that layout is not there on the first render of the layout when accessing it through Route.useRouteContext().

Your Example Website or App

https://stackblitz.com/edit/github-spzf56?file=src%2Froutes%2F_layout.tsx

Steps to Reproduce the Bug or Issue

1. Open Stackblitz
2. Hover the About link to trigger a preload
3. Observe app crashing

Expected behavior

I expect the static context defined on beforeLoad to always be available in the component using Route.useRouteContext()

Screenshots or Videos

No response

Platform

• OS: MacOS
• Browser: Arc (Chromium)
• Version: 125

Additional context

No response