Do not allow the user to send the message when user client on the return button

functions.php

/**
 * Do not allow the user to send the message when they client on the return button
 */
function bb_wp_footer_callback() {
  ?>
  <script type="text/javascript">
    $( document ).ready(function() {
      var el = document.getElementById( "message_content" );
      el.addEventListener("keydown", function(event) {
        if (event.key === "Enter" && ! event.shiftKey ) {
          event.preventDefault();
        }
      });
    });
  </script>
  <?php
}
add_action( 'wp_footer', 'bb_wp_footer_callback', 10000 );

https://www.facebook.com/groups/buddyboss/?multi_permalinks=1672103693224466%2C1671871823247653%2C1671823233252512&notif_id=1676387360783939&notif_t=group_activity&ref=notif