fix: default address not persisting when creating new address

[eltonleaocadastra]

What problem is this solving?

When creating a new address in the cost center details storefront page (/account#/cost-center/{id}) with the "default address" checkbox enabled, the new address is not being set as default after saving.

Root Cause: The new address was being appended to the end of the addresses array:

const newAddresses = [...addresses, newAddress]

Since the backend considers the first address in the array as the default, the previously existing address remained as default.

How to test it?

1. Go to /account#/cost-center/{id}
2. Click "Add new address"
3. Fill in address details and enable "Default address" checkbox
4. Save
5. Reload the page
6. ✅ The new address should remain as default

Screenshots or example usage

Video Evidence: https://jam.dev/c/53f653f9-5d69-4a55-a9c2-7faa92b03f8b

Describe alternatives you've considered, if any

N/A - This is a straightforward bug fix.

Related to / Depends on

Related to VTEX Support Ticket opened for account klabinb2b.

Solution

Place the new address at the beginning of the array when the "default" checkbox is enabled:
const newAddresses = address.checked
  ? [newAddress, ...addresses]
  : [...addresses, newAddress]

[vtex-io-ci-cd]

Hi! I'm VTEX IO CI/CD Bot and I'll be helping you to publish your app! 🤖

Please select which version do you want to release:

• Patch (backwards-compatible bug fixes)

• Minor (backwards-compatible functionality)

• Major (incompatible API changes)

And then you just need to merge your PR when you are ready! There is no need to create a release commit/tag.

• No thanks, I would rather do it manually 😞

[vtex-io-docs-bot]

Beep boop 🤖

I noticed you didn't make any changes at the docs/ folder

• There's nothing new to document 🤔
• I'll do it later 😞

In order to keep track, I'll create an issue if you decide now is not a good time

• I just updated 🎉🎉

[eltonleaocadastra]

Patch

[eltonleaocadastra]

There's nothing new to document 🤔

[eltonleaocadastra]

@vtex-apps/b2b Could someone please check the boxes for Patch version and "There's nothing new to document"? As an external contributor I don't have permission to edit the bot comments. Thanks!