Stop saving the typed in product code on the search box in quote-line

A customer has found that since moving to 47, the ability to save the type'd in product code has proven to cause an issue where lines are being duplicated where hitting tab allows for the same product code to be added again in the instance where a full product code is selected.

shown in the customers loom video: https://www.loom.com/share/4085195b45434190a754fd46b1623dd7 

if possible we should add a system option to turn this off and have the window go back to what it was before the change.