URLs with umlauts are not always recognized

[hex-m]

Description

URLs that contain german umlauts are not recognized correctly.

The URLs all look good on Element-Android.

Version information

• Platform: tested on web (self-hosted instance) and desktop

For the web app:

• Browser: Firefox 78.9.0esr
• OS: Debian Bullseye
• Version: 1.7.25

For the desktop app:

• OS: Debian Bullseye
• Version: 1.7.24

[t3chguy]

Issue with LinkifyJS

[Flexmaen]

Doesn't even need to be an Umlaut.

For example:
https://upload.wikimedia.org/wikipedia/commons/d/de/Vischer_-_Topographia_Ducatus_Stiriae_-_460_Waldstein_bei_Frohnleiten.jpg
turns into

[t3chguy]

@Flexmaen that's a totally different issue. #4674