[WIP] Don't allow Cross Border Trade to kick in when the tax rate is 0

[hostep]

Description (*)

This is a potential fix for #35592
Created the WIP PR to be able to run the tests and see how they will behave because of this change.

Related Pull Requests

Fixed Issues (if relevant)

1. Fixes magento/magento2#<issue_number>

Manual testing scenarios (*)

1. ...
2. ...

Questions or comments

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)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

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[hostep]

@magento run all tests

[magento-automated-testing]

The requested builds are added to the queue. You should be able to see them here within a few minutes. Please re-request them if they don't show in a reasonable amount of time.

[hostep]

@magento run all tests

[magento-automated-testing]

The requested builds are added to the queue. You should be able to see them here within a few minutes. Please message the #magento-devops slack channel if they don't show in a reasonable amount of time and a representative will look into any issues.

[hostep]

Failed tests don't look related to changes here (I think).

However, we will still need to implement some kind of test for this specific case. If somebody is willing to help with this, let me know 🙂