url bbcode does not support irc protocol

URL's using the IRC protocol are not recognized anymore by the URL BBCODE in 3.2.x (the text formatter library). They do not render and appear as broken bbcodes

[url]irc://irc.freenode.net/phpBB-coding[/url] or
[url=irc://irc.freenode.net/phpBB-coding]irc://irc.freenode.net/phpBB-coding[/url]

Text Formatter appears to support irc protocol:
https://github.com/s9e/TextFormatter/blob/c79e98b41fd5517d79d29d0580f2411cce33d56e/docs/Plugins/Autolink/Synopsis.md#how-to-allow-more-schemes

Appears it is a non-configurable config, and was only set by migration to http, https and ftp:
https://github.com/phpbb/phpbb/blob/master/phpBB/phpbb/db/migration/data/v320/allowed_schemes_links.php#L28