Cart: Update order item on cart

Available since: 1.0.0

Provided tokens

Token	Description
[cart]	The cart entity.
[commerce_order_item]	The order item entity.
[commerce_order_item_original]	The original item data before the update.
[event]	The event.
[event:machine_name]	The machine name of the ECA event.
[session_user]	The user account that dispatched the event, regardless if ECA is processing models under a different account.

Reacts when a cart order item is updated (e.g., quantity change). The [cart] token provides the cart order, [commerce_order_item] the updated item, and [commerce_order_item_original] the item before the update. Fires before the cart order is saved.