WooCommerce Analytics: Supporting Bundles

Bundles behave differently to regular products and we don't currently support their behavior in our store event logging.

For example, we'd see a button or link with a single bundle product id like `?add-to-cart=${product_id}`; however, that will add each underlying product in the budle individually to the cart and purchased.

Work on this will be dependent on the solution to #9049

Start by reading the proposed solution in #9049, then locate the existing WooCommerce store event logging entry point. The issue provides no file or test names; done means bundle interactions and purchases are logged with the underlying products rather than only the bundle product id.

Written by the indexing model from the issue text.