feat: add unit configuration to uno.config.ts

app/commit.json

@@ -1 +1 @@
-{ "commit": "5f3405151043b3c32da7acc6353247a5508969b3" }
+{ "commit": "1764145ba4cd8a4cf10f4dc89ac9abf6fd1a00fd" }

uno.config.ts

@@ -241,6 +241,7 @@ export default defineConfig({
       collections: {
         ...customIconCollection,
       },
+      unit: 'em',
     }),
   ],
 });