Fix Afterpay checkout error when shipping information is missing

[mgascam]

Fixes #7509

Changes proposed in this Pull Request

• Validate shipping address from order and fallback to billing address if it is missing or invalid.

Testing instructions

• Merchant: Disable shipping in you local store: go to WooCommerce > Settings > General and set 'Shipping location(s)' as 'Disable shipping& shipping calculations'
• Shopper: add product to cart and proceed to checkout
• Shopper: fill the checkout form and place the order paying with Afterpay
• Observe there are no errors and the checkout proceeds to the Stripe test page.
• Check the shipping data matches the billing information provided in previous step.
• Authorize Payment and check that you are redirected back to the order received page.
• Merchant: Enable shipping in your local store (i.e. Ship to all countries)
• Shopper: add product to cart and proceed to checkout
• Shopper: fill the checkout form, select 'Ship to different address' and fill the shipping address details.
• Shopper: place order.
• Observe there are no errors and the checkout proceeds to the Stripe test page.
• Check the shipping data matches the shipping information provided in previous step.
• Authorize Payment and check that you are redirected back to the order received page.

---

• Run npm run changelog to add a changelog file, choose patch to leave it empty if the change is not significant. You can add multiple changelog files in one PR by running this command a few times.
• Covered with tests (or have a good reason not to test in description ☝️)
• Tested on mobile (or does not apply)

Post merge

• Link to testing instructions from release testing doc following these instructions : Add link here / 'QA Testing Not Applicable'
• Add or update critical flows and testing instructions for critical flows, if applicable.
• Add what's changed (description, screenshot, demo videos etc.) to the release announcement post, if applicable.

[botwoo]

Test the build

Option 1. Jetpack Beta

• Install and activate Jetpack Beta.
• Use this build by searching for PR number 7541 or branch name fix/7509-afterpay-checkout-fails-when-shipping-information-is-missing in your-test.site/wp-admin/admin.php?page=jetpack-beta&plugin=woocommerce-payments

Option 2. Jurassic Ninja - available for logged-in A12s

🚀 Launch a JN site with this branch 🚀

ℹ️ Install this Tampermonkey script to get more options.

---

Build info:

• Latest commit: 8fdf4ae
• Build time: 2023-10-26 07:33:08 UTC

Note: the build is updated when a new commit is pushed to this PR.

[github-actions]

Size Change: 0 B

Total Size: 1.43 MB

ℹ️ View Unchanged

Filename	Size
release/woocommerce-payments/assets/css/admin.css	1.04 kB
release/woocommerce-payments/assets/css/success.css	158 B
release/woocommerce-payments/dist/blocks-checkout-rtl.css	1.8 kB
release/woocommerce-payments/dist/blocks-checkout.css	1.8 kB
release/woocommerce-payments/dist/blocks-checkout.js	75.2 kB
release/woocommerce-payments/dist/checkout-rtl.css	440 B
release/woocommerce-payments/dist/checkout.css	441 B
release/woocommerce-payments/dist/checkout.js	29 kB
release/woocommerce-payments/dist/index-rtl.css	36.4 kB
release/woocommerce-payments/dist/index.css	36.4 kB
release/woocommerce-payments/dist/index.js	284 kB
release/woocommerce-payments/dist/multi-currency-analytics.js	1.05 kB
release/woocommerce-payments/dist/multi-currency-rtl.css	2.88 kB
release/woocommerce-payments/dist/multi-currency-switcher-block.js	60.3 kB
release/woocommerce-payments/dist/multi-currency.css	2.88 kB
release/woocommerce-payments/dist/multi-currency.js	55 kB
release/woocommerce-payments/dist/order-rtl.css	676 B
release/woocommerce-payments/dist/order.css	679 B
release/woocommerce-payments/dist/order.js	41.1 kB
release/woocommerce-payments/dist/payment-gateways-rtl.css	690 B
release/woocommerce-payments/dist/payment-gateways.css	692 B
release/woocommerce-payments/dist/payment-gateways.js	38.6 kB
release/woocommerce-payments/dist/payment-request-rtl.css	153 B
release/woocommerce-payments/dist/payment-request.css	153 B
release/woocommerce-payments/dist/payment-request.js	13.2 kB
release/woocommerce-payments/dist/product-details.js	898 B
release/woocommerce-payments/dist/settings-rtl.css	9.05 kB
release/woocommerce-payments/dist/settings.css	9.05 kB
release/woocommerce-payments/dist/settings.js	234 kB
release/woocommerce-payments/dist/subscription-edit-page.js	669 B
release/woocommerce-payments/dist/subscription-product-onboarding-modal-rtl.css	519 B
release/woocommerce-payments/dist/subscription-product-onboarding-modal.css	519 B
release/woocommerce-payments/dist/subscription-product-onboarding-modal.js	20.4 kB
release/woocommerce-payments/dist/subscription-product-onboarding-toast.js	693 B
release/woocommerce-payments/dist/subscriptions-empty-state-rtl.css	117 B
release/woocommerce-payments/dist/subscriptions-empty-state.css	117 B
release/woocommerce-payments/dist/subscriptions-empty-state.js	19.6 kB
release/woocommerce-payments/dist/tos-rtl.css	230 B
release/woocommerce-payments/dist/tos.css	231 B
release/woocommerce-payments/dist/tos.js	22 kB
release/woocommerce-payments/dist/upe_checkout-rtl.css	440 B
release/woocommerce-payments/dist/upe_checkout.css	441 B
release/woocommerce-payments/dist/upe_checkout.js	34.1 kB
release/woocommerce-payments/dist/upe_split_checkout-rtl.css	440 B
release/woocommerce-payments/dist/upe_split_checkout.css	441 B
release/woocommerce-payments/dist/upe_split_checkout.js	34.7 kB
release/woocommerce-payments/dist/upe_with_deferred_intent_creation_checkout.js	37.1 kB
release/woocommerce-payments/dist/upe-blocks-checkout-rtl.css	1.8 kB
release/woocommerce-payments/dist/upe-blocks-checkout.css	1.8 kB
release/woocommerce-payments/dist/upe-blocks-checkout.js	41 kB
release/woocommerce-payments/dist/upe-split-blocks-checkout-rtl.css	1.8 kB
release/woocommerce-payments/dist/upe-split-blocks-checkout.css	1.8 kB
release/woocommerce-payments/dist/upe-split-blocks-checkout.js	42.5 kB
release/woocommerce-payments/dist/woopay-express-button-rtl.css	153 B
release/woocommerce-payments/dist/woopay-express-button.css	153 B
release/woocommerce-payments/dist/woopay-express-button.js	52.1 kB
release/woocommerce-payments/dist/woopay-rtl.css	3.91 kB
release/woocommerce-payments/dist/woopay.css	3.91 kB
release/woocommerce-payments/dist/woopay.js	71.8 kB
release/woocommerce-payments/includes/subscriptions/assets/css/plugin-page.css	622 B
release/woocommerce-payments/includes/subscriptions/assets/js/plugin-page.js	814 B
release/woocommerce-payments/vendor/automattic/jetpack-assets/build/i18n-loader.js	2.43 kB
release/woocommerce-payments/vendor/automattic/jetpack-assets/src/js/i18n-loader.js	1.01 kB
release/woocommerce-payments/vendor/automattic/jetpack-connection/dist/tracks-ajax.js	522 B
release/woocommerce-payments/vendor/automattic/jetpack-connection/dist/tracks-callables.js	581 B
release/woocommerce-payments/vendor/automattic/jetpack-identity-crisis/babel.config.js	160 B
release/woocommerce-payments/vendor/automattic/jetpack-identity-crisis/build/index.css	2.32 kB
release/woocommerce-payments/vendor/automattic/jetpack-identity-crisis/build/index.js	13.8 kB
release/woocommerce-payments/vendor/automattic/jetpack-identity-crisis/build/index.rtl.css	2.32 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/about.css	1.2 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/admin-empty-state.css	291 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/admin-order-statuses.css	403 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/admin.css	3.56 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/checkout.css	299 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/modal.css	742 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/view-subscription.css	572 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/css/wcs-upgrade.css	411 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/admin-pointers.js	544 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/admin.js	9.63 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/jstz.js	6.8 kB
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release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/meta-boxes-coupon.js	544 B
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release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/moment.js	22.1 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/moment.min.js	11.6 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/payment-method-restrictions.js	1.29 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/admin/wcs-meta-boxes-order.js	502 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/frontend/payment-methods.js	355 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/frontend/single-product.js	429 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/frontend/view-subscription.js	1.38 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/frontend/wcs-cart.js	781 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/modal.js	1.1 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/assets/js/wcs-upgrade.js	1.27 kB
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/build/index.css	392 B
release/woocommerce-payments/vendor/woocommerce/subscriptions-core/build/index.js	3.05 kB

_{compressed-size-action}

[kalessil]

LGTM (code review only)!

[dmvrtx]

Looks good to me code-wise! Left a slight change in the doc-block.