[DEFECT] Quantity doesn't take into account in module sale_product_configurator

[Vang-NguyenPhu]

Impacted versions: Version 17

Steps to reproduce:
1/ Using the product has those variants

2/ Create Sale Order, choose Product from the field product_id and the wizard will be shown. Input quantity and Confirm without Enter or clicking anywhere else on the screen.

3/ The quantity is not taken into account.

Current behavior:

• The quantity is not taken into account while using wizard Configure your product if you input quantity and then Confirm without Enter or clicking anywhere else on the screen.

Expected behavior:

• The quantity should be taken into account while using wizard Configure your product if you input quantity and then Confirm without Enter or clicking anywhere else on the screen.

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