Fix searching in FacesConfig

KItemModels API changed between the time this was written and
KItemModel's having the relevant patch merged. This wasn't updated.

BUG: 422835

faces/ConfigSensors.qml

@@ -234,8 +234,9 @@ ColumnLayout {
                         filterCaseSensitivity: Qt.CaseInsensitive
                         filterString: searchQuery.text
                         sourceModel: KItemModels.KSortFilterProxyModel {
-                            filterRole: "SensorId"
-                            filterRowCallback: function(row, value) {
+                            filterRowCallback: function(source_row, source_parent) {
+                                //filter only items which were leaf nodes from before we squashed everything
+                                var value = sourceModel.data(sourceModel.index(source_row, 0, source_parent), Sensors.SensorTreeModel.SensorId)
                                 return (value && value.length)
                             }
                             sourceModel: KItemModels.KDescendantsProxyModel {

sensors/SensorTreeModel.cpp

@@ -382,9 +382,11 @@ void SensorTreeModel::init()
     connect(query, &SensorQuery::finished, [query, this]() {
         query->deleteLater();
         const auto result = query->result();
+        beginResetModel();
         for (auto pair : result) {
             d->addSensor(pair.first, pair.second);
         }
+        endResetModel();
     });
     query->execute();
 }