Comments from code review applied. Also switched forked_from_project and ForkedProjectLinks to ForkNetworkMember

Closes #40308

Merge branch '40746-broken-master-due-to-failure-in-spec-services-clusters-applications-schedule_installation_service_spec-rb' into 'master'

Ensure `Namespace`'s is namespaced in `Gitlab::Kubernetes::Helm#initialize` and fix a transient failing spec due to that

Closes #40746

See merge request gitlab-org/gitlab-ce!15684

Ensure `Namespace`'s is namespaced in `Gitlab::Kubernetes::Helm#initialize` and fix a transient failing spec due to that
Signed-off-by: Rémy Coutable <remy@rymai.me>

Show only group name by default and put full namespace in tooltip in Groups tree

Closes #40286

See merge request gitlab-org/gitlab-ce!15650

Extract class responsible for building a pipeline

Closes #38460

See merge request gitlab-org/gitlab-ce!14762

Adds validation for Project#ci_config_path not to contain leading slash

Closes #34683

See merge request gitlab-org/gitlab-ce!15672

Gracefully handle case when repository's root ref does not exist

Closes #40615

See merge request gitlab-org/gitlab-ce!15678

Set EE variable for package build triggers from GitLab EE repository

Closes omnibus-gitlab#3006

See merge request gitlab-org/gitlab-ce!15677

This was failing regularly with an Error 500 when the API branches endpoint
was used.

Closes #40615

Clean up Capybara configuration

Closes #40599

See merge request gitlab-org/gitlab-ce!15644

issue note store

See merge request gitlab-org/gitlab-ce!15657

Align Select2 search field

Closes #39451

See merge request gitlab-org/gitlab-ce!15048

allow caching options to be specified for counting services

See merge request gitlab-org/gitlab-ce!15651

Improve require input spec

See merge request gitlab-org/gitlab-ce!15654