Error when saving product without variants

[nfourtythree]

Description

If you create a new product and delete the initial blank variant you get an error

Argument 1 passed to craft\commerce\elements\Product::setVariants() must be of the type array, string given

The reason that I came across this because I basically want a product with all the product goodness and data but at a certain time it can't be purchased.

I would be able to do this but you can't disable a defaultVariant.

I understand this is an edge case so I have taken that into account.

Steps to reproduce

1. Create new multi-variant product
2. Delete initial blank variant
3. Save product

Additional info

• Craft version: Craft Pro 3.0.7
• PHP version: 7.1.17
• Database driver & version: MySQL 5.7.22
• Plugins & versions: Craft Commerce | 2.0.0-beta.4.1

[lukeholder]

Hmmm, would rather make the enabled and disabled status a publishing feature, and then add a separate 'enabled for sale' checkbox to variants. Will look to add it to the next release.