[Forwardport] magento/magento2#13820: IE11 minicart not updating on configurable pr…

[namlier]

Original Pull Request

#14105
…oduct page (ES6)

Description

In setProductOptions function in app/code/Magento/ConfigurableProduct/view/frontend/web/js/options-updater.js i used underscore.find method instead of ES6 array.find.

Fixed Issues (if relevant)

1. IE11 minicart not updating on configurable product page (ES6) #13820: IE11 minicart not updating on configurable product page (ES6)

Manual testing scenarios

1. Open Internet Explorer 11 and go to configurable product page
2. Select swatch attribute values
3. Add product to cart
4. product should be added and mini cart should be updated

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)