Fix leave room dialog

resources/qml/dialogs/LeaveRoomDialog.qml

@@ -2,12 +2,12 @@
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-import Qt.labs.platform 1.1
+import Qt.labs.platform 1.1 as P
 import QtQuick 2.15
 import QtQuick.Controls 2.15
 import im.nheko 1.0
 
-MessageDialog {
+P.MessageDialog {
     id: leaveRoomRoot
 
     required property string roomId
@@ -15,6 +15,6 @@ MessageDialog {
     title: qsTr("Leave room")
     text: qsTr("Are you sure you want to leave?")
     modality: Qt.ApplicationModal
-    buttons: Dialog.Ok | Dialog.Cancel
+    buttons: P.MessageDialog.Ok | P.MessageDialog.Cancel
     onAccepted: Rooms.leave(roomId)
 }