Remove base price from dashboard

[orzechdev]

I want to merge this change because it

• migrates product base price to gross price from priceRangeUndiscounted in the product list and category product list
• removes base price usage from product create and product update page
• removes base price usage from product variant creator

PR intended to be tested with API branch:

Screenshots

Pull Request Checklist

1. All visible strings are translated with proper context.
2. All data-formatting is locale-aware (dates, numbers, and so on).
3. Translated strings are extracted.
4. Number of API calls is optimized.
5. The changes are tested.
6. Type definitions are up to date.
7. Changes are mentioned in the changelog.