Prior to this change we were joining through `upstream_subscriptions`
and `downstream_subscriptions` relations to count `upstream_projects`
and `downstream_projects`. This uses the `ci_subscriptions_projects`
table. Since we've added `disable_joins` to these
`has_many ... through: ...` relations these queries will now be less
efficient. So instead we've simplified the query to not join at all as
the `ci_subscriptions_projects.upstream_project_id` and
`ci_subscriptions_projects.downstream_project_id` are already both
`NOT NULL` foreign keys which means we already know for sure that
counting the `ci_subscriptions_projects` rows is equivalent to counting
the `projects` rows.

These methods were joining between `ci_*` and non `ci_*` tables which is
not going to be allowed when we move `ci_*` tables to a new database.
`disable_joins` was chosen here as this does not increase the
cardinality of data being returned as the only usage of this (aside
from counts handled in the next commit) is
[`project.downstream_projects.each`](
https://gitlab.com/gitlab-org/gitlab/-/blob/0d75b42c4ce663e4a9095348f97e6b84b55ee075/ee/app/services/ci/trigger_downstream_subscription_service.rb#L6
). This is fine to switch to `disable_joins` as there is no pagination,
no limits and no filtering. You can read more at
https://docs.gitlab.com/ee/development/database/multiple_databases.html#use-disable_joins-for-has_one-or-has_many-through-relations
.

Docs: Correct CI YAML before_script example

See merge request gitlab-org/gitlab!71152

Filter Welcome to GitLab console message from capybara

See merge request gitlab-org/gitlab!71151

Use to_h instead of to_hash for vulnerability_flag

See merge request gitlab-org/gitlab!70530

Fix FUZZAPI_EXCLUDE_PATHS typo

See merge request gitlab-org/gitlab!70824

The welcome message we recently added in the console often appears
in capybara test output. This MR adds it to the existing filters.

Changelog: other

Fix broken master caused by zero padded date days in spec

See merge request gitlab-org/gitlab!71158

https://gitlab.com/gitlab-org/gitlab/-/issues/341699

Doc Consistency: integration - global search

See merge request gitlab-org/gitlab!71142

Change formatting for version information

Add Ruby upgrade guidelines

See merge request gitlab-org/gitlab!68955

Move mirroring page to new subdirectory, split

See merge request gitlab-org/gitlab!70992

Drop old int4 PK columns for ci_sources_pipelines

See merge request gitlab-org/gitlab!70896

Add concurrent index resourcegroup status commitid

See merge request gitlab-org/gitlab!70911

[ci skip]

Replace etc. with and so on based on Vale latin terms warning

See merge request gitlab-org/gitlab!71112

Drop old int4 PK column for events

See merge request gitlab-org/gitlab!70915

Clean up substitution warning (administration)-MR3

See merge request gitlab-org/gitlab!71031

documentation: Clean-Up-Vale-Admin-Rule-(user/index)

See merge request gitlab-org/gitlab!70858

Drop old int4 PK columns for ci_job_artifacts

See merge request gitlab-org/gitlab!70884

Render frontmatter in the Content Editor

See merge request gitlab-org/gitlab!70854

Add GitLab DSN to error tracking UI

See merge request gitlab-org/gitlab!70791

Add image filtering for vulnerabilities graphql query

See merge request gitlab-org/gitlab!69867

Render and allow editing frontmatter code blocks
in the Content Editor

Changelog: added

Add support for wbr in content editor

See merge request gitlab-org/gitlab!69365

Address followup items

See merge request gitlab-org/gitlab!70780

Fix method name in RetryBuildService

See merge request gitlab-org/gitlab!71027

Use UserNamespacePolicy for user namespaces

See merge request gitlab-org/gitlab!70820

Clean up substitution warning 2

See merge request gitlab-org/gitlab!71103

Change "%{text} %{files} files" to "%{text} %{files}" removing plural

See merge request gitlab-org/gitlab!70582

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/70582

Changelog: changed

This MR adds support for word break opportunity tags (wbr)
in content editor.

Changelog: added