[Backport] Fix unnecessary recalculation of product list pricing

[Jeroenll]

Original Pull Request

#15089

Description

Unnecessary recalculation of large product list pricing causes huge slowdowns.

Fixed Issues (if relevant)

1. Unnecessary recalculation of product list pricing causes huge slowdowns #14941: Unnecessary recalculation of product list pricing causes huge slowdowns

Manual testing scenarios

1. Create a catalog where prices are including tax + prices are shown including tax.
2. Go to a category page and show 100 products per page.

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)

[Jeroenll]

@miguelbalparda Can you also do this backport?

[miguelbalparda]

Yes @JeroenVanLeusden, thanks for all the help!!

[magento-engcom-team]

Hi @miguelbalparda, thank you for the review.
ENGCOM-1693 has been created to process this Pull Request

[magento-engcom-team]

Hi @JeroenVanLeusden. Thank you for your contribution.
Changes from your Pull Request will be available with the upcoming 2.1.15 release.