fix transient dropdown test failures

Closes #37052 and #34436

See merge request !13862

Merge branch 'fix/sm/37040-regression-pipeline-trigger-via-api-fails-with-500-internal-server-error-in-9-5-1' into 'master'

Fix pipeline trigger via API fails with 500 Internal Server Error in 9.5.1

Closes #37040

See merge request !13861

Refactor Gitlab::Git::Commit to include a repository and add missing specs

See merge request !13815

Add dynamic navigation tunnel to fly-out menus

Closes #35949

See merge request !13315

Optimize notification emails specs

See merge request !13986

Update and fix resolvable note icons for easier recognition

Closes #36582

See merge request !13821

Update templates to include header in the README

Closes #36904

See merge request !13785

Improve flaky ACE editor spec

See merge request !13854

Instrument MergeRequest#ensure_ref_fetched

See merge request !13876

Simplify system hook testing and guarantee test will fire

Closes #37067

See merge request !13858

Bugfix.notify custom participants

Closes #36610

See merge request !13680

Fix failure when issue author is nil

See merge request !13807

Re-allow appearances.description_html to be NULL

Closes #36919

See merge request !13806

[ci skip]

Fire system hooks when a user is created via LDAP or OAuth

Closes #37073

See merge request !13846

Fix old MR diffs

Closes #36516

See merge request !13744

Fix displaying events of removed events and events without commit messages

Closes #36685 and #36722

See merge request !13721

Remove tooltip from filtered search user

Closes #36696

See merge request !13752

Fix blank button not resetting project template value

Closes #36816

See merge request !13757

Properly encode Gitaly RawBlame request params

See merge request !13764

Support simple string LDAP attribute specifications, and search for name rather…

Closes #36841

See merge request !13776

Fix alignment of gpg status

Closes #36709

See merge request !13772

Hide group title on sidebar collapse; use more generic class for titles

Closes #36589

See merge request !13777

Stub `ForkedStorageCheck.storage_available?` by default in all specs

See merge request !13726

Fix inability to test some project integrations

Closes gitlab-ee#3194

See merge request !13729

Resolve "Badges should not be HUGE"

Closes #36496

See merge request !13635

[ci skip]

Fix merge request head pipeline when pipeline has errors

Closes #36657

See merge request !13664
# Conflicts:
#	spec/services/ci/create_pipeline_service_spec.rb

Fix caching of future broadcast messages

Closes #36661

See merge request !13667

Update form to properly set the path

Closes #36519

See merge request !13722

36721 Remove incorrect paragraph regarding renaming repos in settings

Closes #36721

See merge request !13718

Raise Git GC (Housekeeping) Lease Timeout to 24h

See merge request !13719

Circuitbreaker settings to avoid spec-failures

Closes #36324

See merge request !13519

Correctly encode string params for Gitaly's TreeEntries RPC

Closes #36720

See merge request !13724

Greatly reduce test duration for git_access_spec

See merge request !13675