Revert job token setting wording back to "Limit access to this project"

Purpose of revert

Revert !151704 (merged)

Un-rename the project CI/CD setting that controls whether the allowlist filters access to a project's resources via CI_JOB_TOKEN.

See also:

• !151704 (comment 1942606271)
• https://gitlab.slack.com/archives/CNZPN8BT3/p1717623097768829 (internal link)

Checklist

• Create an issue to reinstate the merge request and assign it to the author of the reverted merge request.: #466631 (closed)
  - [ ] If the revert is to resolve a broken 'master' incident, please read through the Responsibilities of the Broken master resolution DRI. - [ ] If the revert involves a database migration, please read through Deleting existing migrations.
• Add the appropriate labels before the MR is created. We can skip CI/CD jobs only if the labels are added before the CI/CD pipeline is created.

Milestone info

• I am reverting something in the current milestone. No changelog is needed, and I've added a ~"regression:*" label.
• I am reverting something in a different milestone. A changelog is needed, and I've removed the ~"regression:*" label.

Related issues and merge requests