[Backport] Fix Sort by Product Name

[ihor-sviziev]

Original Pull Request

#13468

Description

Backport of https://github.com/magento-engcom/magento2ce/pull/1192 to 2.1-develop branch

Fixed Issues (if relevant)

1. Sort by Product Name doesn't work with Ancor and available filters #12860: Sort by Product Name doesn't work with Ancor and available filters

Manual testing scenarios

See #12860

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)

[osrecio]

Hi @ihor-sviziev Thanks for your contribution. I accepted your PR.

[magento-engcom-team]

Hi @ihor-sviziev. Thank you for your contribution.
We will aim to release these changes as part of 2.1.15.
Please check the release notes for final confirmation.