Remove “Automated testing” tab when a project has no DrupalCI testing

The Automated Testing tab currently serves two purposes related to GitLabCI:

1. Copy informing people about GitLab CI's existence and the fact that it is the preferred method of testing
2. A link to documentation detailing how to configure it → .

If we remove this tab/page, what is the best alternative to get this knowledge in front of maintainers/contributors?

GitLab’s UI has various prompts to start using GitLab CI. We don’t put other information about how to get started building a project on project pages; it's up to maintainers to find the relevant documentation. Project pages are primarily for getting information about projects to site builders, the prominent “Automated testing” tab isn’t helpful for them.

OK, makes sense to me!

I wasn't sure if we needed to keep it backward compatible, so I added a flag variable to use this feature or not.

If the flag is enabled, and the project has no runs linked, the tab is no longer visible nor accessible.

MR: https://git.drupalcode.org/project/project_issue_file_test/-/merge_reque...
You can test here: https://fjgarlin-drupal.dev.devdrupal.org/node/343333/qa (delete all jobs and tab will be gone).

Deployed!

Automatically closed - issue fixed for 2 weeks with no activity.