feat(GrowTentKonfigurator): add category load status tracking

Introduce categoryLoadStatus state to track loading for product categories.
Replace forceUpdate with setState to properly update loading status on socket response.

src/pages/GrowTentKonfigurator.js

@@ -76,7 +76,13 @@ class GrowTentKonfigurator extends Component {
       selectedLightType: savedState?.selectedLightType || 'led_quantum_board',
       selectedVentilationType: savedState?.selectedVentilationType || 'premium_ventilation',
       selectedExtras: savedState?.selectedExtras || [],
-      totalPrice: savedState?.totalPrice || 0
+      totalPrice: savedState?.totalPrice || 0,
+      categoryLoadStatus: {
+        "Zelte": false,
+        "Lampen": false,
+        "Abluft-sets": false,
+        "Set-zubehoer": false
+      }
     };
     
     this.handleTentShapeSelect = this.handleTentShapeSelect.bind(this);
@@ -160,7 +166,12 @@ class GrowTentKonfigurator extends Component {
 
     window.socketManager.on(`productList:${categoryId}`,(response) => {
       setCachedCategoryData(categoryId, response);
-      this.forceUpdate();
+      this.setState(prevState => ({
+        categoryLoadStatus: {
+          ...prevState.categoryLoadStatus,
+          [categoryId]: true
+        }
+      }));
     });
 
     const currentLanguage = this.props.languageContext?.currentLanguage || this.props.i18n?.language || 'de';