Do not show punycode to users in cyrillic domains

[faveoled]

For some reason for cyrillic domains the history is shown in punycode. This is too technical and not convenient to the users.

Site example: https://рнидс.срб

In history is becomes some strange symbols starting with xn--

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Igorock]

Also on some devices punycode is shown in address bar instead of cyrillic domain.

[faveoled]

It's been registered as a bug:

https://bugzilla.mozilla.org/show_bug.cgi?id=1858994