Explicitly set the parent in QuickSwitcher

This sets the parent to the overlay, which makes sure it's actually
centered even when the right sidebar is opened.


(cherry picked from commit a456b10420)

Co-authored-by: Joshua Goins <josh@redstrate.com>

src/qml/QuickSwitcher.qml

@@ -27,6 +27,7 @@ Kirigami.SearchDialog {
     onTextChanged: RoomManager.sortFilterRoomListModel.filterText = text
     model: RoomManager.sortFilterRoomListModel
     emptyText: i18nc("Placeholder message", "No room found")
+    parent: QQC2.Overlay.overlay
 
     delegate: RoomDelegate {
         connection: root.connection