feat(#38488): check source_code integrity during source_item mass save

[theuargb]

Description (*)

This fixes the mentioned issue by implementing a fast integrity check for the source code while saving multiple source items, including mixed-case scenarios.

The proposed solution feels in line with the original feature implementation, giving almost no overhead (1 [indexed] SQL query).

Fixed Issues (if relevant)

1. Fixes magento/magento#38488: Inventory source item's source_code is case insensitive during insert, but case sensitive during read

Manual testing scenarios (*)

1. Create at least one additional custom stock source
2. Create a new stock associated with the website
3. Associate the custom sources to the new stock
4. Utilizing the API, create an inventory source item providing incorrect source code (eg. warehouse_alpha -> waRehOuse_alPha)
5. With this fix, an error will be logged and returned - no incorrect source items will be saved to break the admin panel

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)
• All automated tests passed successfully (all builds are green)

[theuargb]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @theuargb. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

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[theuargb]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @theuargb. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @theuargb, unfortunately there is no ability to deploy Magento instance at the moment. Please try again later.

[theuargb]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @theuargb. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @theuargb, unfortunately there is no ability to deploy Magento instance at the moment. Please try again later.