Auto suggest usernames when commenting on new taxon flags

Platform: Website

URL: https://www.inaturalist.org/taxa/XXXXX/flags/new where XXXXX is any taxon_id

Description of need:
Usernames are not suggested partway through typing when filling in the comment field on new taxon flags.

Feature request details:
Enable suggested completion of usernames as seen in all other comments fields.
Screen Shot 2024-05-12 at 9.53.12 PM

It is an easy workaround to post the flag and then comment after, but it would be nice to be able to do it all in one step.