Bug: Select with prefix

<img width="253" alt="image" src="https://github.com/frappe/frappe-ui/assets/30859809/5f084386-1212-402f-b29e-ab24fd6a320e">

```
<FormControl
  type="select"
  :options="options"
  v-model="value"
>
  <template #prefix>
    <IndicatorIcon />
  </template>
</FormControl>
```