Port of 57538-normalize-users-private-profile-field to EE
What does this MR do?
This MR migrates null values to false for the private_profile column within the users table.
Issue: https://gitlab.com/gitlab-org/gitlab-ce/issues/57538
Port of this MR in CE: gitlab-org/gitlab-ce#57538
Does this MR meet the acceptance criteria?
Edited by Mayra Cabrera