[Backport] Fixed review list ajax if product not exist redirect to 404 page #13102

[mage2pratik]

Original Pull Request

#15369

Description

Issue was review list ajax call giving php error log or error number if invalid product id. It should be 404 page.

Fixed Issues (if relevant)

1. review/product/listAjax/id/{{non existent id}/ #13102, Page was not redirect to 404 page.

Manual testing scenarios

1. Use invalid product id in review list ajax
2. For example: <Magento store url>/review/product/listAjax/id/{{non existent id}/

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]

Hi @mage2pratik. Thank you for your contribution.
We will aim to release these changes as part of 2.1.16.
Please check the release notes for final confirmation.