Also updates documentation

Merge branch 'mwaw/208224-move-cluster-health-feature-into-gitlab-core-BE-prometheus-proxy' into 'master'

Extract Metrics Prometheus API proxy logic into shared module

See merge request gitlab-org/gitlab!35606

Documentation: Add note about executor for managed cluster apps

See merge request gitlab-org/gitlab!35906

Remove users.ghost ignore statement

Closes #219004

See merge request gitlab-org/gitlab!35621

Stop writing to update_at on audit_events

See merge request gitlab-org/gitlab!35697

Update Auto DevOps auto-build-image to v0.3.0

See merge request gitlab-org/gitlab!35662

Adds the ability to override the default Dockerfile path via the
DOCKERFILE_PATH CI variable.

- Upstream change: https://gitlab.com/gitlab-org/cluster-integration/auto-build-image/-/merge_requests/47
- Feature request: https://gitlab.com/gitlab-org/gitlab/-/issues/212211

Don't error on wrong MR IID in changelog for cherry pick MRs

See merge request gitlab-org/gitlab!35252

Docs: tone and style edits

See merge request gitlab-org/gitlab!35809

Touching up the pages to bring them closer to GitLab standards.

Revert "Merge branch 'add-bin-feature-flag' into 'introduce-feature-flag-definition'"

See merge request gitlab-org/gitlab!35910

Specify "immediate parent group" as appropriate

Closes gitlab-org/manage/general-discussion#15798

See merge request gitlab-org/gitlab!35461

This reverts merge request !35540

Update ListService to use Alert Management Alerts for last_firing_events

See merge request gitlab-org/gitlab!35482

Use `default_branch_name` when initializing w/README.md

See merge request gitlab-org/gitlab!35801

Merge branch '222313-update-usage-ping-data-to-track-projects-with-can-override-approvals-in-merge-request' into 'master'

Update usage ping data to track projects with overridden approval rules

See merge request gitlab-org/gitlab!35224

Refactor CI variable modal

Closes #214638

See merge request gitlab-org/gitlab!35353

Refactor modal to not mutate
vuex state but use a two way
computed property to disptach
actions and commit mutations to
update state.

- Add specs for last_prometheus_alert_by_project_id

Always Show Delete Button on Feature Flag Strategies

See merge request gitlab-org/gitlab!35786

Always allow the UI to set zero strategies for a flag

Fix 500 API errors with invalid access tokens

See merge request gitlab-org/gitlab!35895

Alert endpoint dropdown

See merge request gitlab-org/gitlab!35474

We consolidate the prometheus intergration
settings and alert settings into a single
area in the Operations section.

Clarify the 1 second requirement is for a cold database_lab run

See merge request gitlab-org/gitlab!35766

Geo: `model` on replicator should be class method

See merge request gitlab-org/gitlab!35763

Fix typo in unreleased changelog

See merge request gitlab-org/gitlab!35792

Correctly create registry table with text limits

See merge request gitlab-org/gitlab!35745

Update Issue Workflow docs for ~"Accepting merge requests" label

See merge request gitlab-org/gitlab!35573

For vast majority of these issues, the triage policy automatically adds
the label and no one adds a weight