fix(order, core-flows): Tax inclusive order line item adjustments (#12875)

* fix(order, core-flows): Tax inclusive order line item adjustments

* fix test

packages/core/core-flows/src/cart/utils/prepare-line-item-data.ts

@@ -195,6 +195,7 @@ export function prepareAdjustmentsData(data: CreateOrderAdjustmentDTO[]) {
     amount: d.amount,
     description: d.description,
     promotion_id: d.promotion_id,
-    provider_id: d.promotion_id,
+    provider_id: d.provider_id,
+    is_tax_inclusive: d.is_tax_inclusive
   }))
 }

packages/core/types/src/order/mutations.ts

@@ -296,6 +296,11 @@ export interface CreateOrderAdjustmentDTO {
    * The associated provider's ID.
    */
   provider_id?: string
+
+  /**
+   * Whether the adjustment is tax inclusive.
+   */
+  is_tax_inclusive?: boolean
 }
 
 /**