Fix login redirect: return redirect() instead of send()+exit

send()+exit breaks in Livewire's mount() context; returning the
redirect response is the correct Livewire v3 approach.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Filament/Pages/Auth/Login.php

@@ -6,9 +6,8 @@ use Filament\Pages\Auth\Login as BaseLogin;
 
 class Login extends BaseLogin
 {
-    public function mount(): void
+    public function mount()
     {
-        redirect()->route('auth.nextcloud')->send();
-        exit;
+        return redirect()->route('auth.nextcloud');
     }
 }