TypeError: Cannot read properties of undefined (reading 'map') at actions.js

[opr]

Describe the bug:

When running this plugin and using the WooCommerce Cart and Checkout blocks, I see this error in my console.

TypeError: Cannot read properties of undefined (reading 'map')
    at actions.js?ver=2e50f7862892acedba0f:1:740

I believe the related file and line is https://github.com/woocommerce/woocommerce-google-analytics-integration/blob/trunk/assets/js/src/tracking.js#L108

Steps to reproduce:

1. Set up Google Analytics
2. Use the Cart/Checkout Blocks
3. Add items to your cart and go to the Checkout page.
4. See the error in JS console.

Expected behavior:

No errors.

Actual behavior:

Error mentioned above.

Additional details:

[eason9487]

In backtracking on this issue, found that this also includes another issue, which is that there is the experimental__woocommerce_blocks-checkout-render-checkout-form event tracking has been lost for over two years. (Ref: woocommerce/woocommerce-blocks#4745)

Since WooCommerce Blocks 10.8.0, which was bundled into Woo 8.1.0, the data structure was changed by woocommerce/woocommerce-blocks#10254. Therefore, this issue also happens on the other four tracking when calling the trackCheckoutStep function.

Since WooCommerce Blocks 11.5.0, which was bundled into Woo 8.4.0, the missing event was added back by woocommerce/woocommerce-blocks#11554, resulting in this issue occurring when entering the checkout page.