Bring back trackClassicPages params to limit the number of changes

and hae a place to document the expected config data structure.

assets/js/src/index.js

@@ -18,6 +18,6 @@ function eventuallyInitializeTracking() {
 		);
 	}
 
-	classicTracking();
+	classicTracking( config() );
 	blocksTracking();
 }

assets/js/src/integrations/classic.js

@@ -13,10 +13,23 @@ import { config } from '../config';
  * To be executed once data set is complete, and `document` is ready.
  *
  * It also handles some Block events that are not fired reliably for `woocommerce/all-products` block.
+ *
+ * @param {Object}   data               - The tracking data from the current page load, containing the following properties:
+ * @param {Object}   data.events        - An object containing the events to be instantly tracked.
+ * @param {Object}   data.cart          - The cart object.
+ * @param {Object[]} data.products      - An array of all product from the current page.
+ * @param {Object}   data.product       - The single product object.
+ * @param {Object}   data.added_to_cart - The product added to cart.
+ * @param {Object}   data.order         - The order object.
  */
-export function classicTracking() {
-	const { events, cart, products, product, addedToCart, order } = config();
-
+export function classicTracking( {
+	events,
+	cart,
+	products,
+	product,
+	added_to_cart: addedToCart,
+	order,
+} ) {
 	// Instantly track the events listed in the `events` object.
 	Object.values( events ?? {} ).forEach( ( eventName ) => {
 		if ( eventName === 'add_to_cart' ) {