Display order total in cart block

reroll

Maybe someone could prepare this as MR against 3.0.x?

Providing that variable for the template wouldn't do any harm I think and as the comments show, people could need it.
Please also add the related documentation to the twig template header!

This needs to be rerolled due to 📌 Lazy load the cart block Active .
Also, we can't just the store default currency code, or fallback to USD.
Additionally, if one of the carts has a different currency, an exception will be thrown by Price::assertCurrency().

Basic reroll. Didn't resolve currency aspects.

And this for the current release (3.0.1 ) hopefully.

Whoops. Missed a couple of things.