[Tablet Orders] Cohesive empty state on split views when Order list/details are empty

[iamgabrielma]

From: https://github.com/woocommerce/woocommerce-ios/pull/12214#issuecomment-1981309519

Currently two different styles of images will show if both order list and order details are empty, either because no orders have been created yet, or because no orders can be found, we'd need a more cohesive style among those. Examples:

Design proposal: 6kkCwI9VOEYcidp6UT5bln-fi-1725_29745

[dangermattic]

Thanks for reporting! 👍