Confirm compatibility with Blocks

[mikkamp]

Describe the issue:

As mentioned in woocommerce/woocommerce-blocks#9212 there could potentially be some compatibility issues with blockified content. In particular with the tracking code.

Tasks:

• The add_to_cart hook is only used for analytics tracking and already has an alternative for blocks: https://github.com/woocommerce/google-listings-and-ads/blob/2.5.0/js/src/gtag-events/index.js#L18-L25
  Double check it though to make sure there wasn't any changes since we use the hook prefix experimental__woocommerce_blocks, in case that's no longer experimental.

• The Order Confirmation page, at the time of creating this wasn't fully "blockified" yet and was using a separate WP page which would call the hook. Recheck this to make sure it's still called with a fully blockified cart/checkout process.

• We should also double check the following warning:

⚠️ Order confirmation page - works ok for now, in most cases (sometimes it doesn't fire, but I don't think that's blocks specific) however be careful when the order confirmation page is blockified, we should ensure the action still fires.

Uncover any details on which scenarios it doesn't fire.

[puntope]

Double check it though to make sure there wasn't any changes since we use the hook prefix experimental__woocommerce_blocks, in case that's no longer experimental.

I checked this in the last version of WooCommerce and seems to be still experimental__woocommerce_blocks-cart-add-item

https://github.com/woocommerce/woocommerce-blocks/blob/trunk/assets/js/base/context/hooks/use-store-events.ts#L23

[puntope]

⚠️ When creating a new page "Test Page" -> add Block -> Products (Beta)

Then Add to cart event doesn't trigger

[puntope]

Order confirmation page - works ok for now, in most cases (sometimes it doesn't fire, but I don't think that's blocks specific) however be careful when the order confirmation page is blockified, we should ensure the action still fires.

✅ This works for me with the classic Checkout page and also creating a new page and adding a Checkout block.

The order confirmation shows the purchase event.

I'm unsure if I need to do anything else to consider the Order confirmation page as "blockified"

[puntope]

⚠️ When creating a new page "Test Page" -> add Block -> Products (Beta)

Then Add to cart event doesn't trigger

I see here we trigger the event when the "Add To Cart button click" happens...

However, then we blocked the trigger for Blocks based Add to Cart button https://github.com/woocommerce/google-listings-and-ads/pull/1636/files#diff-05cafd66cd2e43b74298e2724b55d282f9054e7747d6e7f190f5f6769f8c4e51R72

It seems that the now experimental__woocommerce_blocks-cart-add-item is not being triggered by Products (Beta) Blocks.
Yes it's being triggered in All Products Block