New Create Fulfillment Request Validation

As of Admin version 2024-04 , there cannot be multiple of the same fulfillment_order_id within the line_items_by_fulfillment_order param for the REST "Creates a fulfillment for one or many fulfillment orders" API and GraphQL fulfillmentCreateV2 mutation.

Please combine any payload with the same fulfillment_order_id into one group.