Merge branch 'am-enable-AvoidCreate-for-spec-lib-sidebars' into 'master'

Enable AvoidCreate cop for spec/lib/sidebars

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/122766



Merged-by: Peter Leitzen <pleitzen@gitlab.com>
Approved-by: Peter Leitzen <pleitzen@gitlab.com>
Reviewed-by: Peter Leitzen <pleitzen@gitlab.com>
Co-authored-by: Alina Mihaila <amihaila@gitlab.com>