Non-LDH domains are urlencoded instead of punycoded in login form

Reproduction steps

Open the profile chooser
Click "Add an account"
Click "Change" to edit the instance you login to
Enter something with non-LDH chars, in my example flx.öwö.de
Press "Connect"

Expected behaviour

It punycodes the domain and I can login to flx.xn--w-0gab.de.

Actual behaviour

It URL-encodes the domain and I get an error that the domain flx.%C3%B6w%C3%B6.de could not be reached.

Build information

Version 2026.10.100, Beta 16, Channel Beta, Build 2876, Android 17 (arm64), Device Google Pixel 8 Pro, Locale de-DE, Push unifiedpush, Flutter 3.47.9, Dart 3.13.7

Platform

Android, iOS