Without qqc2-desktop-style the app crashes on startup with the following:

    QQmlApplicationEngine failed to load component
    qrc:/qt/qml/org/kde/marknote/qml/Main.qml: module "org.kde.desktop" is not installed

Additionally, without kitemmodels, the notes list doesn't show up and
the following error is printed to the terminal:

    QQmlComponent: Component is not ready
    file:///usr/lib/qt6/qml/org/kde/kirigami/PageRow.qml:1078: Error: Error while loading page: qrc:/qt/qml/org/kde/marknote/qml/NotesPage.qml:8 module "org.kde.kitemmodels" is not installed

This fixes both.

(cherry picked from commit 11b0a9c3)