BO - Shopping carts - Custom product image does not appear

[florine2623]

Prerequisites

• I understand and accept the project's code of conduct
• I have already searched in existing issues and found no previous report of this bug.

Describe the bug and add screenshots

This bug was found while testing PR #29635

@zuk3975 noticed that when adding a custom product to a cart in FO, when checked in BO > Shopping carts, the product image is missing

Screen.Recording.2022-09-16.at.16.25.57.mov

Expected behavior

The image should be displayed automatically. I shouldn't have to add it manually to my combinations.

Screen.Recording.2022-09-16.at.15.54.49.mov

Steps to reproduce

1. install PR Do not reset customization in FO when changing combination (178x) #29635
2. in FO > add custom product to cart
3. go to BO > Orders > Shopping Carts
4. click latest cart available: OK ✅
5. in BO > Catalog > Products, modify custom product from Standard to Combination product
6. add all sizes available > generate combination
7. open FO > go to your modified custom product page > Choose size > add to cart
8. go back to BO > Orders > Shopping Carts
9. See that the product image is not displayed ❌

PrestaShop version(s) where the bug happened

1.7.8.x

PHP version(s) where the bug happened

7.4

If your bug is related to a module, specify its name and its version

No response