URL with hostname starting by unicode char not recognized

[ZettaScript]

Steps to reproduce

Send a message containing a URL with a hostname starting by a unicode character (like http://ée.tld).

What happened?

What did you expect?

I expected to see http://ée.tld formatted as a URL, the same way http://eé.tld (starting by an ASCII character) is correctly formatted. These domain names are valid, thus they should be formatted correctly (even if it means replacing unicode characters by their ASCII representation).

What happened?

It was plain text, not formatted.

Operating system

Arch Linux

Browser information

Firefox 91.0.2

URL for webapp

https://txmn.tk/element

Homeserver

matrix.txmn.tk

Have you submitted a rageshake?

No

[t3chguy]

This is an upstream issue with LinkifyJS

Duplicate of #17133