Merge branch 'fix-access-to-pipelines-for-anonymous' into 'master'

Allow anonymous user to access pipelines

## What does this MR do?

It fixes an issue where the Pipelines is shown for the Anonymous users,
but they get 404 when clicked. Their session is then logged out.

Fixes #17717.

See merge request !4233

CHANGELOG

@@ -8,6 +8,7 @@ v 8.8.1
   - Allow anonymous users to access a public project's pipelines
   - Fix MySQL compatibility in zero downtime migrations helpers
   - Fix the CI login to Container Registry (the gitlab-ci-token user)
+  - Fix access to Pipelines by Anonymous user
 
 v 8.8.0
   - Implement GFM references for milestones (Alejandro Rodríguez)