Migrate Bootstrap dropdown to GitLab UI GlDropdown in comment_form.vue

See merge request gitlab-org/gitlab!50933

- Replace Boostrap dropdown with GlDropdown for comment submit button.

- Remove note_dropdown qa selector

- Update the shared example Thread Comments
The shared examples under "Thread Comments" have split into two:
"Thread Comments for commit and snippet"
and "Thread Comments for issue, epic and merge request"

Why?
After we've replaced Bootstrap dropdown button
with GitLab UI counterpart in comment_form.vue,
issue, epic and merge request uses GitLab UI GlDropdown
that has slightly different selectors.

Previously quarantined examples have been restored in this commit:
https://gitlab.com/gitlab-org/gitlab/-/issues/196825

Load epic issue metadata info in batches

See merge request gitlab-org/gitlab!54677

If number of epic ids we pass to BulkEpicAggregateLoader reaches a limit
(~200), then postgres uses a different plan for the query which is much
slower.

To avoid this situation, we get this metadata in two phases:
1. get epic ids for epics and its descendants (we use pluck because
this query is recursive and find_each wouldn't help here)
2. we iterate in batches and get metadata for each of batch

Add descriptions to TodoStateEnum

See merge request gitlab-org/gitlab!54178

Remove Event dictionary link from Danger

See merge request gitlab-org/gitlab!54795

Update issue link in add_batch_comments_in_merge_request_spec

See merge request gitlab-org/gitlab!54886

Fix: Root queries that return a connection type are not documented

See merge request gitlab-org/gitlab!54536

Expand left sidebar `Issues` when viewing project iterations

See merge request gitlab-org/gitlab!54815

Add E2E for snippet repository storage move

See merge request gitlab-org/gitlab!53813

Final version

Add btn-default for cancel button in the issuable form

See merge request gitlab-org/gitlab!53458

Update docs for pipeline security summary

See merge request gitlab-org/gitlab!54835

Fix double scrollbar in milestone combobox component

See merge request gitlab-org/gitlab!54734

Update default title of alerts to New: Alert

See merge request gitlab-org/gitlab!54621

Fix codequality empty base report

See merge request gitlab-org/gitlab!54584

Remove gl-overflow-scroll in merge instructions modal

See merge request gitlab-org/gitlab!54144

Alias #work_in_progress? <-> #draft?

See merge request gitlab-org/gitlab!54873

Refactor part of repository storage types documentation

See merge request gitlab-org/gitlab!54655

Fix unpermitted params error in VSA

See merge request gitlab-org/gitlab!54670

Update Adoption Engineering.md

See merge request gitlab-org/gitlab!54855

Add experimentation tracking template to Gitlab.org

See merge request gitlab-org/gitlab!54849

Github Importer: Validate repository size before importing

See merge request gitlab-org/gitlab!54449

Add tables to support geo secondary usage data

See merge request gitlab-org/gitlab!53758

Improves Jira instructions

See merge request gitlab-org/gitlab!54780

Add an E2E test to test a regression on issue creation

See merge request gitlab-org/gitlab!52517

This commit adds an E2E test to test
https://gitlab.com/gitlab-org/gitlab/-/issues/299462
in which edits to an issue created
from a vulnerability are not persisted.

Remove VSA deployment query feature flag [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!54823

Refactor skippable? as registry_exists?

See merge request gitlab-org/gitlab!54735

Replace btn-primary with btn-confirm in Start your free trial button

See merge request gitlab-org/gitlab!53215