POS Price override

[Tim]

It would be great to be able to override the price of product variant line items on POS. I know there is a “price” property in bulkCartUpdate, but this only works for custom sales. Overriding the price of product variant lines is already possible through the Admin API for draft orders, but is missing in the POS cart API. Our current approach for POS is to use a cart transform instead, but this requires us to add line item attributes, which could be added by malicious actors as well making this approach difficult to get airtight (we found a way, but still not ideal)