LibWeb/Ladybird: https://lyra.horse/antonymph does not work properly in Ladybird

[asyncmeow]

https://lyra.horse/antonymph does not work correctly under Ladybird. The website requires using popup windows (and not just new tabs), with the ability to control the positioning of them. Additionally, it seemed to open the "popups" as just blank pages, without ever being able to set the content of the new tabs.

[ADKaster]

This'll need proper window.open support for new windows, most likely. With the actual support for new windows in each of the Chromes now, that shouldn't be too much of a reach.