feat: remove usage of .sync and define explicitly emits (#10209)

References

- https://v3-migration.vuejs.org/breaking-changes/v-model
-
https://v3-migration.vuejs.org/breaking-changes/v-on-native-modifier-removed.html

app/javascript/widget/components/Form/Input.vue

@@ -27,6 +27,7 @@ export default {
       default: '',
     },
   },
+  emits: ['input'],
   setup() {
     const { getThemeClass } = useDarkMode();
     return { getThemeClass };