🐛 fix(purchase-options): correct customer features mapping

Fix customer features mapping in purchase options store to use feature.key
instead of feature.value for both key and value in the customerFeatures record.

This ensures consistent feature key mapping across the purchase options flow.

apps/isa-app/src/modal/purchase-options/store/purchase-options.store.ts

@@ -219,7 +219,7 @@ export class PurchaseOptionsStore extends ComponentStore<PurchaseOptionsState> {
     const customerFeatures =
       selectedCustomer?.features.reduce(
         (acc, feature) => {
-          acc[feature.key] = feature.value;
+          acc[feature.key] = feature.key;
           return acc;
         },
         {} as Record<string, string>,