[DCG] Counter in search view for group isn't updated if there are customers inside

[kiryakov]

Steps

1. Add few customers with some unique_key in name
2. Create DCG
3. Add criteria which contains key from 1.
4. Customers are shown inside group page and counter for group is also updated
5. open search view and see counter for customers

Result customer for group with customers shows 0 which isn't correct

Expected correct value of customer's counter