Add Option pt-br to desktop shortcut/icon (Linux version)

Hi Everyone,
I want ask if The mozilla developers could add the follow entry:
Name[pt_BR]=Abrir nova janela privativa

in this file:
https://searchfox.org/mozilla-central/source/taskcluster/docker/firefox-snap/firefox.desktop

cause I already changed these file but every time that firefox is updated, the modification goes away, and if the add these entry the change go for everyone not just for me.

Filed https://bugzilla.mozilla.org/show_bug.cgi?id=1541430 on that.