feat: added totals tests for end 2 end RMA flow (#8906)

what:

I've added some specs and comments in the specs for where I think totals are incorrect. 

Lets get this test merged in as the status quo and proceed to fix these issues one by one.

Additionally, this also removes the temporary_difference as its not something we use. 

RESOLVES CC-346

Co-authored-by: Carlos R. L. Rodrigues <37986729+carlos-r-l-rodrigues@users.noreply.github.com>

packages/modules/order/src/utils/actions/return-item.ts

@@ -4,7 +4,6 @@ import { setActionReference } from "../set-action-reference"
 
 OrderChangeProcessing.registerActionType(ChangeActionType.RETURN_ITEM, {
   isDeduction: true,
-  awaitRequired: true,
   operation({ action, currentOrder, options }) {
     const existing = currentOrder.items.find(
       (item) => item.id === action.details.reference_id

packages/modules/order/src/utils/calculate-order-change.ts

@@ -71,7 +71,6 @@ export class OrderChangeProcessing {
     transformPropertiesToBigNumber(this.order.metadata)
 
     this.summary = {
-      temporary_difference: 0,
       pending_difference: 0,
       difference_sum: 0,
       current_order_total: this.order.total ?? 0,
@@ -121,13 +120,6 @@ export class OrderChangeProcessing {
         )
       }
 
-      if (type.awaitRequired) {
-        summary.temporary_difference = MathBN.add(
-          summary.temporary_difference,
-          amount
-        )
-      }
-
       if (!this.isEventDone(action) && !action.change_id) {
         summary.difference_sum = MathBN.add(summary.difference_sum, amount)
       }
@@ -145,11 +137,6 @@ export class OrderChangeProcessing {
       ...this.transactions.map((tr) => tr.amount)
     )
 
-    summary.temporary_difference = MathBN.sub(
-      summary.difference_sum,
-      summary.temporary_difference
-    )
-
     summary.pending_difference = MathBN.sub(
       summary.current_order_total,
       summary.transaction_total
@@ -208,7 +195,6 @@ export class OrderChangeProcessing {
       transaction_total: new BigNumber(summary.transaction_total),
       original_order_total: new BigNumber(summary.original_order_total),
       current_order_total: new BigNumber(summary.current_order_total),
-      temporary_difference: new BigNumber(summary.temporary_difference),
       pending_difference: new BigNumber(summary.pending_difference),
       difference_sum: new BigNumber(summary.difference_sum),
       paid_total: new BigNumber(summary.paid_total),