fix(medusa-payment-klarna): Fix division by zero on free shipping (#1840)

integration-tests/api/__tests__/admin/__snapshots__/price-list.js.snap

@@ -75,7 +75,7 @@ Object {
   "ends_at": "2022-12-31T00:00:00.000Z",
   "id": "pl_no_customer_groups",
   "name": "Loyalty Reward - Winter Sale",
-  "prices": Array [
+  "prices": ArrayContaining [
     Object {
       "amount": 100,
       "created_at": Any<String>,

integration-tests/api/__tests__/admin/price-list.js

@@ -471,7 +471,7 @@ describe("/admin/price-lists", () => {
         status: "draft",
         starts_at: "2022-09-01T00:00:00.000Z",
         ends_at: "2022-12-31T00:00:00.000Z",
-        prices: [
+        prices: expect.arrayContaining([
           {
             id: expect.any(String),
             amount: 100,
@@ -483,6 +483,7 @@ describe("/admin/price-lists", () => {
             region_id: null,
             created_at: expect.any(String),
             updated_at: expect.any(String),
+            deleted_at: null,
           },
           {
             id: expect.any(String),
@@ -495,6 +496,7 @@ describe("/admin/price-lists", () => {
             region_id: null,
             created_at: expect.any(String),
             updated_at: expect.any(String),
+            deleted_at: null,
           },
           {
             id: expect.any(String),
@@ -507,6 +509,7 @@ describe("/admin/price-lists", () => {
             region_id: null,
             created_at: expect.any(String),
             updated_at: expect.any(String),
+            deleted_at: null,
           },
           {
             id: expect.any(String),
@@ -534,7 +537,7 @@ describe("/admin/price-lists", () => {
             updated_at: expect.any(String),
             deleted_at: null,
           },
-        ],
+        ]),
         customer_groups: [
           {
             id: "customer-group-1",