bug#72284: kdeconnect-app fails to start

[宋文武 via Bug reports for GNU Guix]

Hello, since the update to 24.05.2, 'kdeconnect-app' fails with:

QQmlApplicationEngine failed to load component
qrc:/qt/qml/org/kde/kdeconnect/app/Main.qml:49:13: Type QQC2.ToolBar unavailable
qrc:/qt/qml/org/kde/desktop/ToolBar.qml: Type GlobalSonnetSettings unavailable
qrc:/qt/qml/org/kde/desktop/private/GlobalSonnetSettings.qml:10:1: module 
"org.kde.sonnet" is not installed