fix(wizard): reset active category to first category when entering step 3

shop/components/order-wizard.tsx

@@ -241,10 +241,10 @@ export function OrderWizard({
   }, [categories, selectedBillingInterval])
 
   useEffect(() => {
-    if (visibleCategories.length > 0 && !visibleCategories.some(c => c.id === activeCategoryId)) {
+    if (step === 3 && visibleCategories.length > 0) {
       setActiveCategoryId(visibleCategories[0].id)
     }
-  }, [visibleCategories, activeCategoryId])
+  }, [step, visibleCategories])
 
   // Endkunden Filterung
   const filteredEndCustomers = useMemo(() => {