AC-11717 Dont throw console error for customer data if the request is…

[Mohamed-Asar]

Description (*)

Don't throw error from customer-data.js if the request is cancelled or blocked by browser.

After clicking login button in checkout page, magneto calls customer load section two times with different sections

first request -> /customer/section/load/?sections=cart%2Ccaptcha%2Cmessages&force_new_section_timestamp=true&_=1735042507664
sections = cart, messages, captcha

second request -> /customer/section/load/?sections=cart%2Cdirectory-data%2Ccustomer%2Ccaptcha%2Ccompare-products%2Clast-ordered-items%2Cinstant-purchase%2CloggedAsCustomer%2Cpersistent%2Creview%2Cwishlist%2Crecently_viewed_product%2Crecently_compared_product%2Cproduct_data_storage%2Cpaypal-billing-agreement%2Cpaypal-buyer-country%2Cmessages&force_new_section_timestamp=false&_=1735042522007

second request also have cart, messages & captcha. I think Firefox is optimize network usage by canceling or blocking the first request if it determines that the subsequent request will provide a superset of the required data (cart, captcha, messages, and more). so its blocked/cancelled the first request and executes the second request.

I added a if condition to not throw any error if status code is zero.

Fixed Issues (if relevant)

1. Fixes Magento 2 login inside the checkout with existing customer give console error in Firefox browser #38557 38557

Manual testing scenarios (*)

1. Open Firefox browser
2. Navigate to Store front as a guest user
3. Go to product page from home page or via category page
4. Add to cart a product
5. Proceed to checkout via minicart or from the cart page
6. Enter email address of an existing customer and then add password
7. Click login button

Note: Enable the below config to show password field for guest checkout, if the email is found

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

[m2-assistant]

Hi @Mohamed-Asar. Thank you for your contribution!
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[Mohamed-Asar]

@magento run all tests