Chatty xmpp authorize pop-up non-designed

Feature: https://source.puri.sm/Librem5/use-cases/issues/107

What application is this relating to?

Chatty

What problem did you encounter

Pop-up looks non-designed

What is the actual behaviour?

pop-up window appears

What is the expected behaviour?

pop-up should appear to match app design

How to reproduce

Start a new chat that needs authentication

Which version did you encounter the bug in?

• I compiled it myself. If you compiled the application from source please provide the git revision via e.g. by running git log -1 --pretty=oneline and pasting the output below.

• I used a precompiled Debian package. Please paste the output of dpkg -s <package name> below.

• I used a prebuilt flatpak. Please paste the output of flatpak info <application-id> below.

• I used something else (please elaborate).

Package: chatty
Status: install ok installed
Priority: optional
Section: net
Installed-Size: 343
Maintainer: Andrea Schäfer <andrea.schaefer@puri.sm>
Architecture: arm64
Version: 0.0.8~313.gbp3faad9
Depends: dconf-gsettings-backend | gsettings-backend, libc6 (>= 2.17), libcairo)
Suggests: calls
Description: XMPP and SMS messaging
 Chatty is a chat application for XMPP and SMS using
 libpurple and Modemmanager.
Homepage: https://source.puri.sm/Librem5/chatty

What hardware are you running on?

• amd64 qemu image
• Librem5 devkit
• other (please elaborte)