NEO-62405: set description localization id when description is empty

[obriard]

Description

set description localization id equals to label localization id when description is empty in source schema and is set to label

Related Issue

in web ui the description of attributes without description in the source schema is displayed in English even if the language is not English

Motivation and Context

it fixes attributes description localization

How Has This Been Tested?

unit test test in web ui with a modified version of the SDK

Screenshots (if appropriate):

Before: After:

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.