What version of starlight are you using?

0.32.5

What version of astro are you using?

5.5.3

What package manager are you using?

bun, pnpm

What operating system are you using?

Mac

What browser are you using?

Chrome, Arc

Describe the Bug

When running dev script, I'm encountering a configuration error related to the i18n routing options.

❯ bun dev
> astro dev

[ERROR] [@astrojs/starlight] An error occurred while updating the config
The option `i18n.routing.redirectToDefaultLocale` is only useful when the `i18n.routing.prefixDefaultLocale` is set to `true`. Remove the option `i18n.routing.redirectToDefaultLocale`, or change its value to `true`.
 
 ELIFECYCLE  Command failed with exit code 1.

it's happening with a fresh empty project