Fix evaluation loader and add tests

[leoromanovich]

fix: typings for evaluate_loader
add: tests for evaluate loader

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Description

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Type of Change

• Examples / docs / tutorials / contributors update
• Bug fix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves an existing feature)
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[Scitator]

could you please add a note to the changelog?

[leoromanovich]

could you please add a note to the changelog?

Done =)