feat(medusa, medusa-js, medusa-react): Implement item change deletion from an order edit (#2241)

packages/medusa-react/mocks/handlers/admin.ts

@@ -1703,7 +1703,19 @@ export const adminHandlers = [
       ctx.json({
         id,
         object: "order_edit",
-        deleted: true
+        deleted: true,
+      })
+    )
+  }),
+
+  rest.delete("/admin/order-edits/:id/changes/:change_id", (req, res, ctx) => {
+    const { change_id } = req.params
+    return res(
+      ctx.status(200),
+      ctx.json({
+        id: change_id,
+        object: "item_change",
+        deleted: true,
       })
     )
   }),