Fix unleash server side cannot return feature flags

Closes #9738

See merge request gitlab-org/gitlab-ee!9532

Add changelog

Improve coding style

Add checks to prevent cycling hierarchy

Closes #9586

See merge request gitlab-org/gitlab-ee!9438

Docs: Fixing path in links in api release doc

See merge request gitlab-org/gitlab-ce!24975

Fix a typo in ./doc/ci/examples/deploy_spring_boot_to_cloud_foundry/index.md from "deafult" to "default".

See merge request gitlab-org/gitlab-ce!25153

Update what supports U2F workflow

See merge request gitlab-org/gitlab-ce!25047

Upgrade gitaly to 1.19.1

See merge request gitlab-org/gitlab-ce!25177

Merge branch '57604-checking-a-box-in-an-issue-description-consistently-throws-an-error-on-11-8-0-rc2' into 'master'

Checking a box in an issue description consistently throws an error

Closes #57604

See merge request gitlab-org/gitlab-ce!25174

Convert noteable_note_spec.js to Vue test utils

See merge request gitlab-org/gitlab-ce!24983

(cherry picked from commit 861f93e6)

Convert noteable_note_spec.js to Vue test utils (EE-port)

See merge request gitlab-org/gitlab-ee!9470

(cherry picked from commit 861f93e6)

Merge branch '57426-review-apps-some-merge-related-tests-fail-in-review-qa-jobs-but-not-in-package-and-qa' into 'master'

Fix a Ruby 2.4 incompatibility in Ci::CreatePipelineService

Closes #57426

See merge request gitlab-org/gitlab-ce!25168

Signed-off-by: Rémy Coutable <remy@rymai.me>

Fix overlapping empty-header logo

Closes #56347

See merge request gitlab-org/gitlab-ce!24868

Notable changes proposed by @pslaughter

Fix broken links on help page

Closes #57554

See merge request gitlab-org/gitlab-ce!25120

Log queue duration in production_json.log

Closes #57420

See merge request gitlab-org/gitlab-ce!25075

Change unicode for non-standard spaces

See merge request gitlab-org/gitlab-ce!24795

Remove fast_destroy_uploads feature flag

Closes #54937

See merge request gitlab-org/gitlab-ce!24930

Transforming Gfm also on paste so it works also in FF

Closes #57561

See merge request gitlab-org/gitlab-ce!25146

`queue_duration` is a useful metric that is currently in api_json.log
but not in production_json.log. We should add it because it tells us how
long the request sat in Workhorse before Unicorn processed it. Having
this field enables the support team to better troubleshoot when delays
began to happen.