fix admin panel build warning on i18.ts

[stonecobra]

npm run cf:build with a clean repo gives a warning during the build:

[next-intl] Reading request configuration from ./i18n.ts is deprecated, please see https://next-intl.dev/blog/next-intl-3-22#i18n-request — you can either move your configuration to ./i18n/request.ts or provide a custom path in your Next.js config:

const withNextIntl = createNextIntlPlugin(
  './path/to/i18n/request.tsx'
);

As we are only pulling the locale, this patch fixes that and removes the deprecation warning.

[byn9826]

Thanks for bring this up, but looks like you are replacing locale with requestLocale, not really related to the "Reading request configuration from ./i18n.ts is deprecated" issue. When I'm testing on my locale this issue still persist, same thing in the pipeline as well https://github.com/ValueMelody/melody-auth/actions/runs/13751133632/job/38532160703?pr=259.

Can you take another look if you are interested

[byn9826]

https://next-intl.dev/blog/next-intl-3-22#await-request-locale

Merge as this deals with a separated issue might raise with Next.js 15

[byn9826]

#263 will fix the issue in description