Attribute with "Catalog Input Type for Store Owner" equal "Fixed Product Tax" for Multi-store

[klakovsky]

Description

Attribute with "Catalog Input Type for Store Owner" equal "Fixed Product Tax" did not work correctly for multi-stores.

Fixed Issues (if relevant)

1. Attribute with "Catalog Input Type for Store Owner" equal "Fixed Product Tax" for Multi-store #12393: Attribute with "Catalog Input Type for Store Owner" equal "Fixed Product Tax" for Multi-store

Manual testing scenarios

1. Create two websites website1 (website_id = 1), website2 (website_id =2)
2. Create new product SKU=product1 and check for "Product in Websites" only website2.
3. Create new product attribute "attribute1" with "Catalog Input Type for Store Owner" equal "Fixed Product Tax".
4. Assign attribute1 to default attribute set.
5. Open product "product1" and find attribute1 and click the button "add" near "attribute1".

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-cicd2]

All committers have signed the CLA.

[mzeis]

@klakovskiy Thank you very much for your contribution! Your PR has been merged.