How do I add an IPTV .m3u stream with a username and password?

The m3u list is accessible like this (example only) https://hello:there@example.com/tv.m3u

So it has a username and password of 'hello' and 'there'.

If I enter the URL in a browser, the m3u gets downloaded. But if I enter the same thing in Jellyfin Live TV Tuner Devices setup as a new M3U Tuner, it returns with an error: "There was an error saving the TV provider. Please ensure it is accessible and try again."

Any help to add it would be greatly appreciated.