Refactor CreateProductDialog and CreateStoreDialog components for improved form handling

- Remove unnecessary destructuring of form values in CreateProductDialog to simplify code.
- Enhance conditional rendering in CreateStoreDialog to ensure proper checks for selected countries.
- Update API request handling in CreateStoreDialog to enforce non-null assertions for required fields.
- Adjust MerchantStore component to use underscore-prefixed parameters in event handlers for clarity.

These changes streamline the form handling process and improve code readability across the components.

src/modules/market/components/CreateProductDialog.vue

@@ -267,7 +267,7 @@ const form = useForm({
 })
 
 // Destructure product form methods
-const { resetForm, values, meta } = form
+const { resetForm, meta } = form
 
 // Product form validation computed
 const isFormValid = computed(() => meta.value.valid)