delivery_dropoff_site : search by customer's name don't work in sale

[saxomanu]

Module

delivery_dropoff_site

Describe the bug

Seach by customer name in sale order don't work

To Reproduce

Affected versions: 18

Steps to reproduce the behavior:

1. Go on sale order
2. Search a customer name
3. No order in fund

Expected behavior
Order with that customer must be found

Additional context
I have create a PR : #1150