improvement: updated toasts. no invisible toast anymore.

frontend/src/components/ui/staff/StaffPage.tsx

@@ -34,7 +34,6 @@ import { Badge } from '@/components/ui/shared/Badge';
 import { Input } from '@/components/ui/shared/Input';
 import { Checkbox } from '@/components/ui/shared/Checkbox';
 import { Table } from '@/components/ui/shared/Table';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { getUserFacingError } from '@/components/shared/formatApiError';
 import { StaffMembersMobileList } from '@/components/ui/staff/StaffMembersMobileList';
 import { useToast } from '@/lib/hooks/useToast';
@@ -523,8 +522,6 @@ export function StaffPage() {
         </Button>
       </div>
 
-      <ToastStack {...toast.messages} />
-
       {seats && (
         <p className="text-sm text-text-secondary">
           {t('seatsLabel')}{' '}