fix: start new chat icon

app/commit.json

@@ -1 +1 @@
-{ "commit": "1d64a15ed0110fc62091b1dca90139de9fb9fdb4" }
+{ "commit": "1d64a15ed0110fc62091b1dca90139de9fb9fdb4" }

uno.config.ts

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