By catch on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
10.3.x
Introduced in version: 
10.3.0
Issue links: 
https://www.drupal.org/node/3410582
Description: 

The function user_is_blocked() is deprecated, to check if a user is blocked, use Drupal\user\UserInterface::isBlocked() instead.

Impacts: 
Module developers