fix: use valid widget inset token

apps/nextjs/src/components/board/items/item-content.module.css

@@ -1,7 +1,7 @@
 .settingsButton {
   position: absolute;
-  top: calc(var(--mantine-spacing-s) / 2);
-  right: calc(var(--mantine-spacing-s) / 2);
+  top: calc(var(--mantine-spacing-sm) / 2);
+  right: calc(var(--mantine-spacing-sm) / 2);
   z-index: 201;
   opacity: 0;
   pointer-events: none;