refactor: Update 'core' app references to 'admin'

ui/desktop/app/styles/app.scss

@@ -135,6 +135,7 @@
         0% {
           background-position: -100% 0;
         }
+
         100% {
           background-position: -200% 0;
         }
@@ -162,6 +163,7 @@
       0% {
         background-color: var(--action-subtler-1);
       }
+
       100% {
         background-color: transparent;
       }