This is based on the solution we created in
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/57830 to
improve the performance of the `Issuable::DestroyService`.

Previously, the associated `label_links` to an Issuable (can be a
MergeRequest, Issue or Epic) gets destroyed when an issuable gets
destroyed. If there are 100 label links, that means 100 delete
SQL queries as well.

With this fix, the deletion will be done in batches. It's being
done in batches to avoid statement timeouts in case there are a
lot of label links to be deleted.

The worker will be performed asynchronously when the feature flag
is enabled.

Changelog: performance

docs: Update links for Jira integration

See merge request gitlab-org/gitlab!61467

Adding initial tracking for file size highlight limits

See merge request gitlab-org/gitlab!61273

Delete Notes from original ES index

See merge request gitlab-org/gitlab!61399

Tie-breaker in Deployment Finder should respect the original sort direction

See merge request gitlab-org/gitlab!61444

Fix user popover bio overflow

See merge request gitlab-org/gitlab!61555

Describe default behaviour of GitLab security scanning tools

See merge request gitlab-org/gitlab!61557

GraphQL: Add Project.topics and deprecate Project.tag_list

See merge request gitlab-org/gitlab!61250

Use artifacts:when: on_failure with screenshots

See merge request gitlab-org/gitlab!61203

Add validation initForm helper

See merge request gitlab-org/gitlab!61213

Remove unused weight select

See merge request gitlab-org/gitlab!61492

Changelog: fixed

Fix :focus styles for What's New

See merge request gitlab-org/gitlab!61398

Add warning when SAML SSO checkbox is unchecked

See merge request gitlab-org/gitlab!60868

Add CC validation on the pipeline details page [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!61246

Remove Starter reference from Jira DVCS Connector page

See merge request gitlab-org/gitlab!61538

Migrate issue service subclasses to BaseProjectServices [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!59182

Update GitLab UI/SVG

See merge request gitlab-org/gitlab!61225

Remove ci_pipeline_ensure_iid_on_skip feature flag [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!61231

MR: gitlab.com/gitlab-org/gitlab/-/merge_requests/61231
Issue: gitlab.com/gitlab-org/gitlab/-/issues/327661

Changelog: performance

Combine and rename bulk edit feature specs

See merge request gitlab-org/gitlab!61289

Combine and rename specs for improved organisation
and consistency

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61289

- Follow-on to previous commit, to keep the changes related
  to Epics::BaseService hierarchy constructor in a cohesive
  commit, to make it easier to identify the scope of changes
  for future potential refactors.
- Add metaprogramming conditional logic to account for the
  different potential first argument names.
- Add TODO notes indicating that checking types or method signatures
  in logic is an antipattern, but the root cause is probably
  that inheritance may not be appropriate here.

What:

- Continuation of refactoring discussed and started in
  https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30979#note_337747596
- Refactors Issuable-related service classes to subclass
  `BaseContainerService` instead of `BaseService`.

Why:

- This provides a greater degree of type safety in order to
  more easily and safely introduce a new named argument
  `spam_params` to support
  https://gitlab.com/gitlab-org/gitlab/-/merge_requests/58603
- The additional type safety will also make future refactors
  easier and less risky

How:

- Note that this is an incremental commit.
  In a subsequent commit, the
  first argument will be changed to `group` in the
  `Epics::BaseService` hierarchy.

Create database tables for escalation policies and rules

See merge request gitlab-org/gitlab!60685

Add stuck field to the job type

See merge request gitlab-org/gitlab!61247

Add script to identify problematic deploy keys

See merge request gitlab-org/gitlab!60977