Add `OrderCustomer.isFirstOrder` to checkout_completed Event Data

[mamoroom]

Description

I would like to request an enhancement regarding the event data available for the checkout_completed event in your implementation.

According to the Shopify Web Pixels API documentation, it seems possible to retrieve the OrderCustomer.isFirstOrder attribute. However, it appears that this functionality is not currently implemented in the sheet-kit side of things. https://github.com/Shopify/checkout-sheet-kit-react-native/blob/main/modules/%40shopify/checkout-sheet-kit/src/pixels.d.ts#L491

Could you please consider adding support for this attribute? It would be incredibly helpful for our analytics and customer segmentation efforts.

Rationale

Enhance Customer Segmentation: Differentiate between new and returning customers, allowing for more targeted marketing strategies and personalized customer experiences.

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs in 30 days. Thank you for your contributions.

[markmur]

This shipped as part of 3.3.0