MAGENTO-18131: Fixed EAV attributes values query

[strell]

Description

SQL Join error when using the custom EAV entity together with the standard eav_entity entity table.
Had to add the table alias into the entity_type_id filter condition.

Fixed Issues (if relevant)

1. Entity Type ID at Join #18131: Entity Type ID at Join

Manual testing scenarios

See issue description

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-cicd2]

All committers have signed the CLA.

[magento-engcom-team]

Hi @aleron75, thank you for the review.
ENGCOM-3124 has been created to process this Pull Request

[aleron75]

Hello @strell, thanks for your contribution.
Once merged, don't forget you can easily port this PR to other branches, if applicable, with the Porting Tool, read more here.

[magento-engcom-team]

Hi @strell. Thank you for your contribution.
We will aim to release these changes as part of 2.3.1.
Please check the release notes for final confirmation.