feat: loading screen, initSDK on bootstrap, fix FOUC for theme (#10350)

* feat: loading screen, initSDK on bootstrap, fix FOUC for theme

* pulsate immich logo, don't set localstorage

* Make it spin

* Rework error handling a bit

* Cleanup

* fix test

* rename, memoize

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

web/src/routes/auth/onboarding/+page.ts

@@ -1,11 +1,9 @@
-import { loadConfig } from '$lib/stores/server-config.store';
 import { authenticate } from '$lib/utils/auth';
 import { getFormatter } from '$lib/utils/i18n';
 import type { PageLoad } from './$types';
 
 export const load = (async () => {
   await authenticate({ admin: true });
-  await loadConfig();
 
   const $t = await getFormatter();