Handle empty masked quote id return case

[magento-engcom-team]

Issue found:

When we try to create a masked quote id in a scenario, "When a new customer is created on storefront and on using mutations to create customer token for same customer and a cart using CustomerCart on CustomerCart resolver in Magento/QuoteGraphQl/Model/Resolver/CustomerCart.php.

We figured out that masked quote id is empty (" ")is given from Magento/Quote/Model/QuoteIdToMaskedQuoteId.php and quoteidmask table, even when quote->getId() is created in Quote table,

We fixed it on resolver level, but it needs a core code fix. An additional logic need to be added in Magento/Quote/Model/QuoteIdToMaskedQuoteId.php that checks for such cases where a quote id is present and create a non empty masked id on a requested quote.

After fixing this, revert the changes accordingly in Magento/QuoteGraphQl/Model/Resolver/CustomerCart.php and make sure that the testGetLoggedInCustomerCartWithoutMaskedQuoteId still passes in dev/tests/api/functional/testsuite/Magento/GraphQl/Quote/Customer/GetCustomerCartTest.php without any changes.

[m2-assistant]

Hi @magento-engcom-team. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

For more details, please, review the Magento Contributor Assistant documentation.

Please, add a comment to assign the issue: @magento I am working on this

---

• Join Magento Community Engineering Slack and ask your questions in #github channel.

[m2-assistant]

Hi @pmarjan. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
     Details

     If the issue has a valid description, the label Issue: Format is valid will be added to the issue automatically. Please, edit issue description if needed, until label Issue: Format is valid appears.
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue. If the report is valid, add Issue: Clear Description label to the issue by yourself.
• 3. Add Component: XXXXX label(s) to the ticket, indicating the components it may be related to.
• 4. Verify that the issue is reproducible on 2.4-develop branch
     Details

     - Add the comment @magento give me 2.4-develop instance to deploy test instance on Magento infrastructure.
     - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
     - If the issue is not reproducible, add your comment that issue is not reproducible and close the issue and stop verification process here!

---

• Join Magento Community Engineering Slack and ask your questions in #github channel.