[Forwardport] "Multiple Select" product attributes do not render HTML tags on the storefront view

[nmalevanec]

Original Pull Request

#15687

Issue fix for: #15393

1. Fixed the check for allowed HTML tags OR wysiwyg for textarea attribute types.
2. Fix for options so that they can be rendered as HTML as well.

[magento-engcom-team]

Hi @nmalevanec. Thank you for your contribution
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[ishakhsuvarov]

Hi @nmalevanec
Original Pull request seems to include updates to the test which are not part in this port. Could you please make sure that test coverage isn't decreased?

Thanks

[nmalevanec]

@ishakhsuvarov these test changes already exist in 2.3-develop.

[magento-engcom-team]

Hi @sidolov, thank you for the review.
ENGCOM-2887 has been created to process this Pull Request

[sidolov]

Hi @nmalevanec , we cannot reproduce this issue on 2.3-develop.

Manual testing scenario:

1. Create a dropdown / multiselect attribute
2. One or more of the values contain html tags (test value)
3. "allow HTML on frontend" and "use in product listing" are set to "Yes"
4. Add this new attribute to an attribute set
5. Create a product based on this attribute set and select at least one of the values containing HTML tags
6. Open Product Page on the frontend.

Result
Attribute option didn't contain HTML tags and is displayed as test value

I'm closing this PR as not relevant.
Thank you for the contribution!