When a blocked user tries to log in they are immediately signed out
again.

This in turn calls the `before_logout` callback in Warden. In that
callback we try to log the activity for the blocked user in the
`BlockedUserTracker`:
https://gitlab.com/gitlab-org/gitlab/blob/e30d909d3f19511742d218da0b4bd2cecca8b7a2/config/initializers/warden.rb#L60

If a `SystemHook` was configured, this would also mean scheduling a
job. Scheduling a job tries to get the current user from the
context. For the `OmniAuthCallbacksController` this would call
`current_user` which would try to sign the user in again.

The `OmniauthCallbacksController` is an `ApplicationController`, which has
a `#context_user` method that uses `#auth_user` which also exposes
`#current_user`, but it has a safeguard to not call current user
multiple times.

Instead of trying to fetch it again for the omniauth sign in
request. We push it into the context when the sign in was valid.

Changelog: fixed

Add Project Avatar & Group Uploads to GitLab Migration

See merge request gitlab-org/gitlab!75249

Feature: add save type to audit event service

See merge request gitlab-org/gitlab!74757

Memoize feature flag call in MergeRequests::AfterCreateService

See merge request gitlab-org/gitlab!75717

Use aggregated VSA backend in time summary

See merge request gitlab-org/gitlab!75406

Improve wording of e.g. and i.e. instances

See merge request gitlab-org/gitlab!75879

Externalize i18n strings from blob/show.html.haml

See merge request gitlab-org/gitlab!75733

Update planned_failover_single_node.md

See merge request gitlab-org/gitlab!75867

Fix vertical alignment of compare changes button

See merge request gitlab-org/gitlab!75243

Add snowplow stats enabled metric

See merge request gitlab-org/gitlab!75184

Fix vale issues in planned_failover_multi_node.md

See merge request gitlab-org/gitlab!75836

Update zero_downtime.md to fix Vale issues

See merge request gitlab-org/gitlab!75837

Updates admin deploy keys feature specs after refactoring to Vue

See merge request gitlab-org/gitlab!75574

Use linear versions of descendants in GroupDescendantsFinder

See merge request gitlab-org/gitlab!68954

Re-order the arguments list for onSetup

See merge request gitlab-org/gitlab!75725

Add create crm contact component

See merge request gitlab-org/gitlab!75047

Improve deteriminism of simulateDrag

See merge request gitlab-org/gitlab!75303

Expire job and pipeline cache synchronously

See merge request gitlab-org/gitlab!75611

Fabricate group deploy token resource via API

See merge request gitlab-org/gitlab!75131

Set low urgency for specified Verify:PA endpoints

See merge request gitlab-org/gitlab!75795

Move override_rails_constants.rb to another location

See merge request gitlab-org/gitlab!75862

Provide command in case fixtures haven't been ran

See merge request gitlab-org/gitlab!75294

  - Add Group Uploads to GitLab Migration
  - Add Project Avatar to GitLab Migration
  - Remove GroupAvatarPipeline since there is no need for it
    anymore

Replace GlTable with GlTablelite for CI Lint Table

See merge request gitlab-org/gitlab!75365

Fix Vale issues for administration/package_information/index.md

See merge request gitlab-org/gitlab!75844