WordPress: Sort ACF Location Rule values alphabetically to make them easier to find when defining a Field Group

functions.php

<?php
/**
 * Sort ACF location rules values alphabetically
 */
add_filter(
  'acf/location/rule_values',
  function ( $values, $rule ) {
    if ( is_array( $values ) ) {
      asort( $values, SORT_STRING | SORT_FLAG_CASE );
    }
    return $values;
  },
  10,
  2
);