Merge branch 'fix-rubocop-offenses-preloader-specs' into 'master'

Fix Rubocop offenses of ancestor preloader specs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/181406



Merged-by: Aleksei Lipniagov <alipniagov@gitlab.com>
Approved-by: Andrew Jung <ajung@gitlab.com>
Approved-by: Aleksei Lipniagov <alipniagov@gitlab.com>
Reviewed-by: Aleksei Lipniagov <alipniagov@gitlab.com>
Co-authored-by: Arturo Herrero <arturo.herrero@gmail.com>