FileInputField does not react to a form reset event

The FileInputField does not react to a form reset event when it is in a form.

Repro:
```jsx
<form>
  <FileInputField
    fullWidth
    id="my-file"
    label="First name"
    onFilesChanged={() => {}}
  />
  <input type="file" />
  <button type="reset">Reset</button>
</form>
```

When a file is added to both of the inputs, only the native one will reset when the reset button is pressed.