Use gitlab_environment because we need:

changelogs/unreleased/44425-use-gitlab_environment.yml

+---
+title: Fix `gitlab-rake gitlab:two_factor:disable_for_all_users`
+merge_request: 18154
+author:
+type: fixed

lib/tasks/gitlab/two_factor.rake

 namespace :gitlab do
   namespace :two_factor do
     desc "GitLab | Disable Two-factor authentication (2FA) for all users"
-    task disable_for_all_users: :environment do
+    task disable_for_all_users: :gitlab_environment do
       scope = User.with_two_factor
       count = scope.count