fix inaccurate return type (#9935)

Author: gigabites19

vite.md

@@ -399,7 +399,7 @@ import { resolvePageComponent } from 'laravel-vite-plugin/inertia-helpers';
 createInertiaApp({
   resolve: (name) => resolvePageComponent(`./Pages/${name}.vue`, import.meta.glob('./Pages/**/*.vue')),
   setup({ el, App, props, plugin }) {
-    return createApp({ render: () => h(App, props) })
+    createApp({ render: () => h(App, props) })
       .use(plugin)
       .mount(el)
   },