Make ChooseRoomDialog a SearchPage

Makes it look a bit nicer and more standardised

src/qml/ChooseRoomDialog.qml

@@ -1,6 +1,8 @@
 // SPDX-FileCopyrightText: 2023 Tobias Fella <tobias.fella@kde.org>
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+pragma ComponentBehavior: Bound
+
 import QtQuick
 import QtQuick.Controls
 
@@ -8,29 +10,20 @@ import org.kde.kirigami as Kirigami
 
 import org.kde.neochat
 
-Kirigami.ScrollablePage {
+SearchPage {
     id: root
 
     title: i18nc("@title", "Choose a Room")
 
+    showSearchButton: false
+
     signal chosen(string roomId)
 
     required property NeoChatConnection connection
 
-    header: Kirigami.SearchField {
-        onTextChanged: RoomManager.sortFilterRoomListModel.filterText = text
+    model: RoomManager.sortFilterRoomListModel
+    modelDelegate: RoomDelegate {
+        onClicked: root.chosen(currentRoom.id)
+        connection: root.connection
     }
-
-    ListView {
-        model: RoomManager.sortFilterRoomListModel
-        delegate: RoomDelegate {
-            id: roomDelegate
-            onClicked: {
-                root.chosen(roomDelegate.currentRoom.id);
-            }
-            connection: root.connection
-        }
-    }
-
-    Component.onCompleted: Qt.callLater(() => header.forceActiveFocus())
 }