feat(catalog-ui): render tree in tree filter only when having data

Author: Adrien

apps/catalog-ui/src/components/smart-filter/TreeSearchFilterPanel.vue

@@ -28,6 +28,7 @@
   <!-- v8 ignore start -->
   <div class="column tree-search-filter-panel">
     <generic-tree
+      v-if="items.length > 0"
       v-model:ticked="tickedNodeKeys"
       :tickeable="true"
       :ui-namespace="localUiNamespace"