Before we started working on group wikis, `ProjectWiki` used a `Project`
instance as the container of its `Repository` instance, so for group
wikis we did the same with `Group`.

This initially made sense and also mostly aligned with the semantics for
`Repository#container`, but while working on wiki diffing [1] we noticed
that the `Commit` and `Blob` classes sometimes use
`container#repository`, which breaks some assumptions and also causes
redundant Gitaly calls to the project repository when diffing wikis.

Refactoring those classes is a lot riskier and would affect other
features too, so in this commit we're instead changing the
`Repository#container` to be the wiki instance, rather than the project
or group. This generally seems to make sense anyway, and only needs some
small adjustments.

To satisfy the interface for `Repository#container`, we need to add
or tweak some methods:

- `Wiki.find_by_id`
- `Wiki#id`
- `Wiki#to_global_id`

We also still need to be able to resolve wiki repositories from their
containers, this is handled in the repository resolver for
`Gitlab::GlRepository::WIKI`.

[1] https://gitlab.com/gitlab-org/gitlab/-/merge_requests/35330

Add use case for enabled_for_attribute? method in experiment guide

See merge request gitlab-org/gitlab!44165

Strategy spec speedup

See merge request gitlab-org/gitlab!44077

Removing references to redash.gitlab.com since it's no longer used

See merge request gitlab-org/gitlab!44224

Replace double angle icons with GitLab SVG in issuables sidebar

See merge request gitlab-org/gitlab!43655

Add helper method for adding page specific styles for IDE-xterm

See merge request gitlab-org/gitlab!44190

Update clipboard button to use Pajamas

Closes #219834

See merge request gitlab-org/gitlab!38421

Introduce configuration value for mounts

See merge request gitlab-org/gitlab!43485

Document addition of 'mounts' entry

Expose using_license_seat in users API for admins

See merge request gitlab-org/gitlab!43057

Fixed abbreviated words replacing with long-form in create-project.md

Closes #241791

See merge request gitlab-org/gitlab!43975

Remove unused hide_dismissed_vulnerabilities feature flag code & yml file

Closes #259747

See merge request gitlab-org/gitlab!44212

Emphasize on templates and auto-discovery for Auto DevOps documentation intro

See merge request gitlab-org/gitlab!44143

Add table for project alert http integrations

See merge request gitlab-org/gitlab!43634

Adds a new table and model to represent expected
url/token combos for alerting. This table will
house integrations which have generic alert
payload formatting and custom mappings, once custom
mappings are available.

Update usage quotas table

See merge request gitlab-org/gitlab!43644

This MR updates the usage quotas page behind
additional_repo_storage_by_namespace feature flag. The
table displays excess storage purchased by the user

Merge branch '260339-multiple-test-failures-with-relation-feature_gates-does-not-exist' into 'master'

Resolve "Multiple test failures with `relation "feature_gates" does not exist`"

Closes #260339

See merge request gitlab-org/gitlab!44177

Add placeholder token in example snippet

Closes #259641

See merge request gitlab-org/gitlab!44210

Fix DastSiteProfiles::Update Ruby 2.7 kwarg warn

See merge request gitlab-org/gitlab!44178

Fix filtering epics when sorting by dates

See merge request gitlab-org/gitlab!42827

DRY api/users_spec activation specs

See merge request gitlab-org/gitlab!44057

Doc: Remove "in order to" uses in docs

See merge request gitlab-org/gitlab!44185

Geo Form - Internal URL More Info Link

Closes #33339

See merge request gitlab-org/gitlab!43876

Upgrade GitLab Workhorse to v8.50.0

See merge request gitlab-org/gitlab!44159

Remove obsolete image guideline

See merge request gitlab-org/gitlab!44180

Update Gitaly version

See merge request gitlab-org/gitlab!44198

Update node and yarn in build images

See merge request gitlab-org/gitlab!44015

docs: Fix a typo in SQL Query Guidelines

See merge request gitlab-org/gitlab!44189

Update and unquarantine issue board tests

See merge request gitlab-org/gitlab!44055

Import dashboard metrics on default branch update

See merge request gitlab-org/gitlab!39658

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

Provide default to epics_select/base.vue

See merge request gitlab-org/gitlab!44096