Warning: Trying to access array offset on value of type null

[stealth-program]

Steps to reproduce:

1. make only integer fields available to search in crud.
2. Enter letters in search field.
3. Easyadmin expects only digits, so it makes broken queryBuilder(parts is empty), which results in error
   If I add some text field to ->setSearchFields(), error disappears.

The problem is in EasyCorp\Bundle\EasyAdminBundle\Orm\EntityRepository->addSearchClause()
Easyadmin version 4.9.4

[alshenetsky]

Probably duplicate of #6223 . I've already pushed a fix (#6242), waiting to be merged

[stealth-program]

yes, duplicate