fix: use semantic colors across admin pages

src/app/admin/import/furni/nitro-editor-dialog.tsx

@@ -83,7 +83,7 @@ function CopyClassname({ value }: { value: string }) {
     >
       <span className="truncate">{value}</span>
       {copied ? (
-        <Check className="w-3 h-3 text-[var(--color-success-text-readable)] shrink-0" />
+        <Check className="w-3 h-3 text-[var(--admin-success)] shrink-0" />
       ) : (
         <Copy className="w-3 h-3 shrink-0" />
       )}