[Forwardport] Module Catalog: fix issue with custom option price conversion for different base currency on website level

[oleksii-lisovyi]

Original Pull Request

#18225

Description

Issue is connected to the custom option price conversion based on base currency configured on default level, but not on website level (Magento allows to configure different base currency on website level according to documentation).

It's reproduced on the following Magento setup with multi-currency configuration:

1. There are 2 websites configured: US and CA (or another one).
2. Base Currency is configured in the next way: default level - USD; CA - CAD.
3. And if you try to update product with custom options (with non zero price) on CA website level, for example, you need just to change product price, every time you save the product, custom options price will be converted according to USD/CAD currency rate.

Fixed Issues (if relevant)

No related issues found.

Manual testing scenarios

Steps to reproduce

1. Create 2 websites on Magento: US website and CA website.
2. Set up Base Currency to USD (or any other) on default scope.
3. Set up Base Currency to CAD on CA website scope.
4. Create product with custom options and set up non zero price for option value.
5. Save the product.
6. Change configuration scope on CA website.
7. Save product.

Expected result
Custom option value price is not changed, because no actual changes were done.

Actual result
Custom option value price is updated according to USD/CAD currency rate.

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 @oleksii-lisovyi. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

• @magento-engcom-team give me test instance - deploy test instance based on PR changes
• @magento-engcom-team give me $VERSION instance - deploy vanilla Magento instance

For more details, please, review the Magento Contributor Assistant documentation

[magento-engcom-team]

Hi @sidolov, thank you for the review.
ENGCOM-3046 has been created to process this Pull Request

[magento-engcom-team]

Hi @oleksii-lisovyi. 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.