Improve live traces observability using counters

Closes #227182

See merge request gitlab-org/gitlab!42359

[Relative Positioning] Correct sibling query for epic tree nodes

See merge request gitlab-org/gitlab!41986

Expose dependency path

See merge request gitlab-org/gitlab!40644

Add mock data

Add docs for custom schema validation

See merge request gitlab-org/gitlab!42194

Outside the Syntax highlighting header as per:
https://gitlab.com/gitlab-org/gitlab/-/issues/247483#note_413000624

Track projects using code intelligence

See merge request gitlab-org/gitlab!41881

This commit extends code around live traces with additional
observability mechanisms through Prometheus counters.

Don't apply Ctrl markdown shortcuts on Mac

See merge request gitlab-org/gitlab!42239

Update buttons in the Add issues modal in Boards

Closes #229321

See merge request gitlab-org/gitlab!42317

Add note for red merge button to MR docs

Closes #245329 and #245326

See merge request gitlab-org/gitlab!41608

Add tracking to group invite banner

Closes #219240 and #229619

See merge request gitlab-org/gitlab!41774

Projects::CreateService to consider only group membership for admin

See merge request gitlab-org/gitlab!42335

Remove remaining deprecated GlNew references

See merge request gitlab-org/gitlab!42422

Don't clean Sidekiq processes when fetching metrics

See merge request gitlab-org/gitlab!42463

Docs: Clarify definition of subject

See merge request gitlab-org/gitlab!42445

Add *_VERSION files to the .backend-patterns list

Closes #250272

See merge request gitlab-org/gitlab!42444

Display Contributor and Author badges on notes

Closes #16534

See merge request gitlab-org/gitlab!40198

Add instance level variables to the priority list

See merge request gitlab-org/gitlab!42442

docs: Fix typo in GitLab Notification Email

See merge request gitlab-org/gitlab!42447

Fix Gitaly update Slack notification

See merge request gitlab-org/gitlab!42369

Merge branch '227575-fe-implementation-convert-rest-api-to-graphql-mutation-for-mr-creation-flow' into 'master'

Replace POST with GraphQL mutation in SAST Configuration

See merge request gitlab-org/gitlab!41995

This replaces the existing form submission POST request with a GraphQL
mutation.

This change also updates some stale TODO comments to point to a more
relevant issue.

Addresses https://gitlab.com/gitlab-org/gitlab/-/issues/227575.

Docs: Update page with several style edits

See merge request gitlab-org/gitlab!42410

As this would need changing Ruby files.

Migrating deprecated button on the Productivity Analysis page

Closes #219772

See merge request gitlab-org/gitlab!42339

Fix feature flag documentation guideline

See merge request gitlab-org/gitlab!42467

Adds 3 tracking events invite_members_banner_displayed,
invite_members_banner_button_click, and
invite_members_banner_dismissed

Network policy editor feature flag

See merge request gitlab-org/gitlab!41949

Update Gitaly version

See merge request gitlab-org/gitlab!42460

Pass project ID to issue placement worker

See merge request gitlab-org/gitlab!42091

[RUN AS-IF-FOSS] Restrict incident list query to available fields

See merge request gitlab-org/gitlab!42301

The Sidekiq process metrics API endpoint uses the default argument for
`clean_plz` to `Sidekiq::ProcessSet`, which is `true`. We don't actually
need to clean the processes here because it's a read-only API endpoint,
and Sidekiq does this automatically in the regular processes.

Update design list item component to use GitLab UI classes

See merge request gitlab-org/gitlab!42441