[Order Details] Move action buttons into a separate section

[joshheald]

⛔ This is awaiting design work from @joe-keenan

Now, if all products are refunded, the action buttons are hidden. But the action buttons affect the entire order, and it feels wrong to have them located inside the Products section. So let’s move them out into a separate section. I’ll have to do some design work here, but I feel it’s the right thing to do.

Context: p91TBi-8P0#refunded-products-the-mark-as-complete-button

• [ ] Move action buttons from Products section to a separate section (requires design)