Enable “file” button for translation

The AVATAR block uses an input field of type “file”, which uses ALWAYS the deault language of browser. Thsi is a problem because it mixes languages when used in multilingual sites. Can you please use the following trick to fix this problem?

<div>
  <label 
    for="upload_avatar_field_button" 
    class="btn">
    <?php _e("Select Image", 'text-domain'); ?>
  </label>
  <input 
    type="file" 
    id="upload_avatar_field_button"
    name="simple_upload_avatar_field" 
    style="visibility:hidden;">
</div>

with

$("#upload_avatar_field_button").change(function() {
  filename = this.files[0].name;
  // Do what you want
});