Fix minor warnings

src/messagecontent/FileComponent.qml

@@ -2,12 +2,13 @@
 // SPDX-FileCopyrightText: 2024 James Graham <james.h.graham@protonmail.com>
 // SPDX-License-Identifier: GPL-3.0-only
 
+pragma ComponentBehavior: Bound
+
 import QtCore as Core
 import QtQuick
 import QtQuick.Controls as QQC2
 import QtQuick.Layouts
 import QtQuick.Dialogs as Dialogs
-import Qt.labs.qmlmodels
 
 import org.kde.coreaddons
 import org.kde.kirigami as Kirigami