WOOMOB-891

Description

This is a re-created version of [Shipping Labels] Get rid of HSTariffNumberTotalValue validation logic targeting trunk

The PR addresses the suggestion from comment and deletes the redundant HS tariff class total amount check. The item class validation is not needed since the whole shipment gets an ITN number requirement if shipment total value exceeds 2500. In such case the tariff class validation will never reach execution.

• Deletes hsTariffNumberTotalValue composure and corresponding tests
• Makes totalValue reactive per item instead of computed.
• Combine over totalItemValue for validation error calculation instead of itemsViewModels.

Testing

The current behaviour is already in trunk. The PR only deletes the redundant logic. But anyway check the following steps work as described:

• Use a testing store with a Shipping plugin installed and running
• Create an order with several product items with total order amount of 2500+ $. Keep these items under single shipment. Or open a similar order with a corresponding unfulfilled shipment.
• Each item total should be less than 2500$. For example you could have 2 product items with total of 1500$ each. In my example I made it 1500$ and 1001$

• Make sure the shipment has a foreign destination address.
• The "Customs" section should show the "Missing info" badge.
• Open the "Customs" forms and make sure the "International Transaction Number" field is required.
• Fill in random HSTariff numbers in customs form for each product item. For example 22.22.22.33
• Make sure the "International Transaction Number" field is still displayed as required.

Screenshots

• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.