feat: auth logout page (#27831)

* feat: auth logout page

* feat: skip login if already logged in

web/src/lib/utils/server.ts

@@ -1,3 +1,4 @@
+import { authManager } from '$lib/managers/auth-manager.svelte';
 import { featureFlagsManager } from '$lib/managers/feature-flags-manager.svelte';
 import { serverConfigManager } from '$lib/managers/server-config-manager.svelte';
 import { initLanguage } from '$lib/utils';
@@ -13,6 +14,7 @@ async function _init(fetch: Fetch) {
   defaults.fetch = fetch;
   await initLanguage();
   await serverConfigManager.init();
+  await authManager.load();
 
   if (!serverConfigManager.value.maintenanceMode) {
     await featureFlagsManager.init();