shouldSplitItem not working on ValidateCartMutation with attachment

[raphaelsantos-dev]

Describe the bug
I have the cart configured to not split products on faststore.config.js
cart: {
id: "",
items: [],
messages: [],
shouldSplitItem: false,
},

When I change the quantity a product with a attachment on miniCart, the product is splited.
This quantity is changed by cartStore.updateItemQuantit from sdk

import { cartStore } from 'src/sdk/cart'
cartStore.updateItemQuantity(item.id, quantity)

This split create a bug scenario, the request sent a quantity 2 on ValidateCartMutation, but response has a quantity 4

.har file compressed to validation
sfj-51cd395--farewayqa.preview.vtex.app_Archive [24-08-26 13-37-54].har.zip

Expected behavior
Product with attachment not split on orderForm when quantity is changed

Steps to reproduce

• Add the product with attachment to cart
• Change the quantity to 3 (product is splited)
• Change the attachment of this product (this action join the splitted product)
• Change the quantity to 4 (the payload has qty 4, but response has 6)

Workspace
https://sfj-51cd395--farewayqa.preview.vtex.app