[Backport] Fix: Attribute Option with zero at the beginning does not work if there is already option with the same number without the zero [REST API]

[ghost]

Original Pull Request

#19451

Description

Fix: Attribute Option with zero at the beginning does not work if there is already option with the same number without the zero

Fixed Issues

1. Attribute Option with zero at the bigining does not work if there is already option with the same number without the zero (REST API)) #19436: Attribute Option with zero at the bigining does not work if there is already option with the same number without the zero (REST API)

Manual testing scenarios

1. Create an attribute (select or multiselect) from the backend (example: attribute_code = brand_number)
2. add new Option to this attribute from the backend (12345)
3. Add new Option to this attribute by the REST API (endpoint : /V1/products/attributes/brand_number/options), json = {"option":{"label":"012345"}}
4. expected result to have two options (12345 and 012345).

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 on Travis CI are green)

[magento-engcom-team]

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[magento-engcom-team]

Hi @sidolov, thank you for the review.
ENGCOM-3691 has been created to process this Pull Request

[ghost]

Hi @SikailoISM, thank you for your contribution!
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